Alternative History
Emperor of Germany
Imperial

Coat of Arms
Incumbent

Frederick IV
since 26 September 1994
Details
Style His Imperial Majesty
Heir apparent Crown Prince Frederick
Formation 1 January 1871
Residences Berlin City Palace
States of the German Empire Pharaonic Survival labelled

Monarchies of the Empire of Germany

The monarchs of Prussia are members of the House of Hohenzollern who were the hereditary rulers of the former German state of Prussia since its founding in 1525 as the Duchy of Prussia. The Duchy had evolved out of the Teutonic Order, a Roman Catholic crusader state and theocracy located along the eastern coast of the Baltic Sea. The Teutonic Knights were under the leadership of a Grand Master, the last of whom, Albert, converted to Protestantism and secularized the lands, which then became the Duchy of Prussia.

The Duchy was initially a vassal of the Kingdom of Poland, as a result of the terms of the Prussian Homage whereby Albert was granted the Duchy as part of the terms of peace following the Prussian War. When the main line of Prussian Hohenzollerns died out in 1618, the Duchy passed to a different branch of the family, who also reigned as Electors of Brandenburg in the Holy Roman Empire. While still nominally two different territories, Prussia under the suzerainty of Poland and Brandenburg under the suzerainty of the Holy Roman Empire, the two states are known together historiographically as Brandenburg-Prussia.

Following the third Northern War, a series of treaties freed the Duchy of Prussia from vassalage to any other state, making it a fully sovereign Duchy in its own right. This complex situation (where the Hohenzollern ruler of the independent Duchy of Prussia was also a subject of the Holy Roman Emperor as Elector of Brandenburg) laid the eventual groundwork for the establishment of the Kingdom of Prussia in 1701. For diplomatic reasons, the rulers of Prussia called themselves King in Prussia from 1701 to 1772. They still nominally owed fealty to the Emperor as Electors of Brandenburg, so the "King in Prussia" title (as opposed to "King of Prussia") avoided offending the Emperor. Additionally, calling themselves "King of Prussia" implied sovereignty over the entire Prussian region, parts of which were still part of Poland.

As the Prussian state grew through several wars and diplomatic moves throughout the 18th century, it became apparent that Prussia had become a Great Power in its own right. By 1772, the pretense was dropped, and the style "King of Prussia" was adopted. The Prussian kings continued to use the title "Elector of Brandenburg" until the end of the Holy Roman Empire in 1806, reflecting the legal fiction that their domains within the empire were still under the ultimate overlordship of the Emperor. Legally, the Hohenzollerns ruled Brandenburg in personal union with their Prussian kingdom, but in practice they treated their domains as a single unit. The Hohenzollerns gained de jure sovereignty over Brandenburg when the empire dissolved in 1806, and Brandenburg was formally merged into Prussia.

In 1871, in the aftermath of the Franco-Prussian War, the German Empire was formed, and the King of Prussia, Wilhelm I was crowned German Emperor. From that point forward, though the Kingdom of Prussia retained its status as a constituent state of the empire (by far the largest and most powerful), all subsequent Kings of Prussia also served as German Emperor, and that title took precedence.

Image Name Reign Lifespan Notes Titles
Albert 10 April 1525 – 20 March 1568
(42 years 11 months 10 days)
17 May 1490 – 20 March 1568 (aged 77) Grand Master of Teutonic Knights, granted the title of Duke of Prussia Duke of Prussia
Albert Frederick 20 March 1568 – 27 August 1618
(50 years 5 months 7 days)
7 May 1553 – 27 August 1618 (aged 65) Son of Albert Duke of Prussia
John Sigismund 28 August 1618 – 23 December 1619
(1 year 3 months 25 days)
8 November 1572 – 23 December 1619 (aged 47) Son in law and second cousin thrice removed of Albert Frederick, also Elector of Brandenburg Elector of Brandenburg, Duke of Prussia
George William 23 December 1619 – 1 December 1640
(20 years 11 months 8 days)
13 November 1595 – 1 December 1640 (aged 45) Son of John Sigismund, also Elector of Brandenburg Elector of Brandenburg, Duke of Prussia
Frederick William the Great Elector 1 December 1640 – 29 April 1688
(47 years 4 months 28 days)
16 February 1620 – 29 April 1688 (aged 68) Son of George William, also Elector of Brandenburg Elector of Brandenburg, Duke of Prussia
Frederick I 29 April 1688 – 25 February 1713
(24 years 9 months 27 days)
11 July 1657 – 25 February 1713 (aged 55) Son of Frederick William, also Elector of Brandenburg Elector of Brandenburg, Duke of Prussia, King in Prussia
Frederick William I 25 February 1713 – 31 May 1740
(27 years 3 months 6 days)
14 August 1688 – 31 May 1740 (aged 51) Son of Frederick I Elector of Brandenburg, King in Prussia
Frederick II 31 May 1740 – 17 August 1786
(46 years 2 months 17 days)
24 January 1712 – 17 August 1786 (aged 74) Son of Frederick William I King of Prussia
Frederick William II 17 August 1786 – 16 November 1797
(11 years 2 months 30 days)
25 September 1744 – 16 November 1797 (aged 53) Nephew of Frederick II, Grandson of Frederick William I King of Prussia
Frederick William III 16 November 1797 – 7 June 1840
(42 years 6 months 22 days)
3 July 1770 – 7 June 1840 (aged 69) Son of Frederick William II King of Prussia
Frederick William IV 7 June 1840 – 2 January 1861
(20 years 6 months 26 days)
15 October 1795 – 2 January 1861 (aged 65) Son of Frederick William III; also President of the Erfurt Union (1849–1850) King of Prussia
Wilhelm I 2 January 1861 – 9 March 1888
(27 years 2 months 7 days)
22 March 1797 – 9 March 1888 (aged 90) Brother of Frederick William IV, Son of Frederick William III; also President of the North German Confederation (1867–1871) and German Emperor (from 1871) German Emperor, King of Prussia
Frederick III 9 March – 15 June 1888
(3 months 6 days)
18 October 1831 – 15 June 1888 (aged 56) Son of Wilhelm I German Emperor, King of Prussia
Wilhelm II 15 June 1888 – 9 November 1918
(30 years 4 months 25 days)
27 January 1859 – 4 June 1941 (aged 82) Son of Frederick III German Emperor, King of Prussia
Wilhelm III 9 November 1918 – 20 July 1951
(32 years 8 months 11 days)
6 May 1882 - 20 July 1951 (aged 69) Son of Wilhelm II German Emperor, King of Prussia
Louis Ferdinand 20 July 1951 – 26 September 1994
(43 years 2 months 6 days)
9 November 1907 - 26 September 1994 (aged 86) Son of Wilhelm III German Emperor, King of Prussia
Frederick IV 26 September 1994 – present 10 June 1976 Grandson of Louis Ferdinand German Emperor, King of Prussia

Constituent Kings[]

Image Name Reign Lifespan
Kings of Bavaria
House of Wittelsbach
Maximilian I 16 February 1799 – 13 October 1825
(26 years 7 months 27 days)
16 February 1799 – 6 August 1806
Louis I 13 October 1825 – 20 March 1848
(22 years 5 months 7 days)
Son
Maximilian II 20 March 1848 – 10 March 1864
(15 years 11 months 19 days)
Son
Louis II 10 March 1864 – 13 June 1886
(22 years 3 months 3 days)
Son
Otto 13 June 1886 – 5 November 1913
(27 years 4 months 23 days)
Brother
Louis III 5 November 1913 – 18 October 1921
(7 years 11 months 13 days)
Son of Prince Regent Luitpold and grandson of Ludwig I.
Robert I 18 October 1921 – 2 August 1955
(33 years 9 months 15 days)
Son
Albert 2 August 1955 – 8 July 1996
(40 years 11 months 6 days)
Son
Francis 8 July 1996 – 20 July 2024
(28 years 12 days, Abdicated)
Son
Louis IV 20 July 2024 - Brother
Kings of Saxony
House of Wettin
Frederick Augustus I 17 December 1763 - 5 May 1827
(63 years 4 months 18 days)
Raised from Duke to elector to King
Anthony 5 May 1827 – 6 June 1836
(9 years 1 month 1 day)
Brother
Frederick Augustus II 6 June 1836 – 9 August 1854
(18 years 2 months 3 days)
Nephew
John 9 August 1854 – 29 October 1873
(19 years 2 months 20 days)
Brother
Albert I 29 October 1873 – 19 June 1902
(28 years 7 months 21 days)
Son
George I 19 June 1902 - 15 October 1904
(2 years 3 months 26 days)
Brother
Frederick Augustus III 15 October 1904 – 18 February 1932
(27 years 4 months 3 days)
Son
George II 18 February 1932 - 19 February 1933
(1 year 1 day)
Son
Albert II 19 February 1933 – 9 August 1968
(35 years 5 months 21 days)
Brother
Maria Emanuel 9 August 1968 – 23 July 2012
(43 years 11 months 14 days)
Son
Albert III 23 July 2012 – 6 October 2012
(2 months 13 days)
Brother
Timo I 6 October 2012 - 29 March 2022
(9 years 5 months 23 days)
Great-Grandson of Frederick Augustus III
Timo II 29 March 2022 - Son
Kings of Württemberg
House of Württemberg
Frederick I 23 December 1797 - 30 October 1816
(18 years 10 months 7 days)
Raised from Duke to elector to King
William I 30 October 1816 - 25 June 1864
(47 years 7 months 26 days)
Son
Charles I 25 June 1864 - 6 October 1891
(27 years 3 months 11 days)
Son
William II 6 October 1891 - 2 October 1921
(29 years 11 months 26 days)
Nephew
Albert I 2 October 1921 - 31 October 1939
(18 years 29 days)
Cousin
Albert II 31 October 1939 – 15 April 1975
(35 years 5 months 15 days)
Son
Charles II 15 April 1975 – 7 June 2022
(47 years 1 month 23 days)
Son
William III 7 June 2022 - Grandson
Kings of Hanover
House of Hanover
George I 23 January 1698 – 11 June 1727
(29 years, 4 months and 19 days)
Founder
George II 11 June 1727 – 25 October 1760
(33 years, 4 months and 14 days)
Son
George III 25 October 1760 – 29 January 1820
(59 years, 3 months and 4 days)
Son
George IV 29 January 1820 – 26 June 1830
(10 years, 4 months and 28 days)
Son
William 26 June 1830 – 20 June 1837
(6 years, 11 months and 25 days)
Brother
Ernest Augustus I 20 June 1837 – 18 November 1851
(14 years, 4 months and 29 days)
Brother
George V 18 November 1851 – 12 June 1878
(26 years, 6 months and 25 days)
Son
Ernest Augustus II 12 June 1878 – 14 November 1923
(45 years, 5 months and 2 days)
Son
Ernest Augustus III 1 November 1913 – 30 January 1953
(39 years, 2 months and 29 days)
Son
Ernest Augustus IV 30 January 1953 – 9 December 1987
(34 years, 10 months and 9 days)
Son
Ernest Augustus V 9 December 1987 - Son
Kings of Westphalia
House of Bonaparte
Jerome I 7 July 1807 – 24 June 1860
(52 years, 11 months and 17 days)
Founder
Jerome II 24 June 1860 – 17 March 1891
(30 years, 8 months and 21 days)
Son
Louis I 17 March 1891 - 14 October 1932
(41 years, 6 months and 27 days)
Son
Louis II 14 October 1932 - 3 May 1997
(64 years, 6 months and 19 days)
Nephew
Jerome III 3 May 1997 - 3 May 2006
(9 years) (Abdicated)
Son
Louis III 3 May 2006 - Present
(Reigning)
Son
Kings of Thuringia
House of Saxe Weimar Eisenach
Charles Augustus 15 January 1946 – 14 October 1988
(42 years, 8 months and 29 days)
Founder
Michael 14 October 1988 - Son
Monarchs of Baden
House of Baden
Charles Frederick 12 May 1738 – 10 June 1811
(73 years 29 days)
Unification of Baden 1771
Charles I 10 June 1811 – 8 December 1818
(7 years 5 months 28 days)
Grandson
Louis I 8 December 1818 – 30 March 1830
(11 years 3 months 22 days)
Uncle
Leopold I 30 March 1830 – 24 April 1852
(22 years 25 days)
Half-brother
Louis II 24 April 1852 – 22 January 1858
(5 years 8 months 29 days)
Son
Frederick I 25 September 1856 – 28 September 1907
(51 years 3 days)
Brother
Frederick II 28 September 1907 – 9 August 1928
(20 years 10 months 12 days)
Son
Maximilian I 9 August 1928 – 6 November 1929
(1 year 2 months 28 days)
Cousin, grandson of Leopold I
Berthold 6 November 1929 – 27 October 1963
(33 years 11 months 21 days)
Son
Maximilian II 27 October 1963 – 29 December 2022
(59 years 2 months 2 days)
Son
Bernhard 29 December 2022 – present
(reigning)
Son
Monarchs of Hesse-Darmstadt
House of Hesse
Louis I 6 April 1790 – 6 April 1830
(40 years)
Elevated to Grand Duke
Louis II 6 April 1830 – 16 June 1848
(18 years 2 months 10 days)
Son
Louis III 16 June 1848 – 13 June 1877
(28 years 11 months 28 days)
Son
Louis IV 13 June 1877 – 13 March 1892
(14 years 9 months)
Nephew
Ernest Louis 13 March 1892 – 9 October 1937
(45 years 6 months 26 days)
Son
Donatus I 9 October 1937 – 16 November 1937
(1 month 7 days)
Son
Louis V 16 November 1937 – 30 May 1968
(30 years 6 months 14 days)
Brother
Philip I 30 May 1968 – 14 October 1988
(20 years 4 months 14 days)
Elevated to King, Relative
Maurice I 25 October 1980 – 23 May 2013
(32 years 6 months 28 days)
Son
Donatus II 23 May 2013 – Present Son
Monarchs of Hesse-Kassel
House of Hesse
William I 31 October 1785 – 27 February 1821
(35 years 3 months 27 days)
Elevated to Elector
William II 27 February 1821 – 20 November 1847
(26 years 8 months 24 days)
Son
Frederick William I 30 September 1831 – 6 January 1875
(43 years 3 months 7 days)
Son
Frederick William II 6 January 1875 – 14 October 1884
(9 years 9 months 8 days)
Grandson of prince Frederick of Hesse-Kassel, brother of William I
Frederick William III 14 October 1884 – 14 October 1888
(4 years)
Son
Alexander Frederick 14 October 1888 – 16 March 1925
(36 years 5 months 2 days)
Brother
Fredrick Charles 16 March 1925 – 28 May 1940
(15 years 2 months 12 days)
Brother
Philip I 28 May 1940 – 25 October 1980
(40 years 4 months 27 days)
Son
Maurice I 25 October 1980 – 23 May 2013
(32 years 6 months 28 days)
Son
Donatus II 23 May 2013 – Present
(Reigning)
Son

Grand Duchies[]

Image Name Reign Lifespan
Monarchs of Mecklenburg Schwerin
House of Mecklenburg
Frederick Francis I 24 April 1785 – 1 February 1837
(51 years 9 months 8 days)
Elevated to Grand Duke
Paul Frederick 1 February 1837 – 7 March 1842
(5 years 1 month 6 days)
Grandson
Frederick Francis II 7 March 1842 – 15 April 1883
(41 years 1 month 8 days)
Son
Frederick Francis III 15 April 1883 – 10 April 1897
(13 years 11 months 26 days)
Son
Frederick Francis IV 10 April 1897 – 17 November 1945
(48 years 7 months 7 days)
Son
Frederick Francis V 17 November 1945 – 31 July 2001
(55 years 8 months 14 days)
Son
Borwin V 26 January 1996 - Present
(Reigning)
Son
Monarchs of Mecklenburg Strelitz
House of Mecklenburg
Charles II 2 June 1794 – 6 November 1816
(22 years 5 months 4 days)
Elevated to Grand Duke
George I 6 November 1816 – 6 September 1860
(43 years 10 months)
Son
Frederick William 6 September 1860 – 30 May 1904
(43 years 8 months 24 days)
Son
Adolph Frederick V 30 May 1904 – 11 June 1914
(10 years 12 days)
Son
Adolph Frederick VI 11 June 1914 – 23 February 1918
(3 years 8 months 12 days)
Son
Charles III 23 February 1918 – 6 December 1934
(16 years 9 months 13 days)
Relative
George II 6 December 1934 – 6 July 1963
(28 years 7 months)
Nephew
Alexander I 6 July 1963 – 26 January 1996
(32 years 6 months 20 days)
Son
Borwin V 26 January 1996 - Present
(Reigning)
Son
Monarchs of Oldenburg
House of Holstein-Gottorp
Frederick Augustus I 14 December 1773 – 6 July 1785
(11 years 6 months 22 days)
Elevated to Duke
William 6 July 1785 – 2 July 1823
(37 years 11 months 26 days)
Son
Peter I 2 July 1823 – 21 May 1829
(5 years 10 months 19 days)
Elevated to Grand Duke, nephew of Frederick Augustus I and cousin of William
Augustus I 21 May 1829 – 27 February 1853
(23 years 9 months 6 days)
Son
Peter II 27 February 1853 – 13 June 1900
(47 years 3 months 17 days)
Son
Frederick Augustus II 13 June 1900 – 24 February 1931
(30 years 8 months 11 days)
Son
Nikolaus 24 February 1931 – 3 April 1970
(39 years 1 month 10 days)
Son
Anton-Günther II 3 April 1970 – 20 September 2014
(44 years 5 months 17 days)
Son
Christian XI 20 September 2014 –
(Reigning)
Son
Grand Dukes of Saxe Weimar Eisenach
House of Saxe Weimar Eisenach
Ernest Augustus I 10 May 1707 – 19 January 1748
(40 years 8 months 9 days)
Inherited Saxe Eisenach
Ernest Augustus II 19 January 1748 – 28 May 1758
(10 years 4 months 9 days)
Son
Charles Augustus I 28 May 1758 – 14 June 1828
(70 years 17 days)
Son
Charles Frederick 14 June 1828 – 8 July 1853
(25 years 24 days)
Son
Charles Alexander I 8 July 1853 – 5 January 1901
(47 years 5 months 28 days)
Son
William Ernest 5 January 1901 – 24 April 1923
(22 years 3 months 19 days)
Grandson
Charles Augustus II 24 April 1923 – 14 October 1988
(65 years 5 months 20 days)
Son
Charles Alexander II 14 October 1988 -
(Reigning)
Son
Grand Dukes of Anhalt
House of Ascania
Leopold IV 9 August 1817 – 22 May 1871
(53 years 9 months 13 days)
Unification of Anhalt, 1863
Frederick I 22 May 1871 – 24 January 1904
(32 years 8 months 2 days)
Son
Frederick II 24 January 1904 – 21 April 1918
(14 years 2 months 28 days)
Son
Edward I 21 April 1918 – 13 September 1918
(4 months 23 days)
Brother
Joachim Ernest II 13 September 1918 – 18 February 1947
(28 years 5 months 5 days)
Son
Frederick III 18 February 1947 – 9 October 1963
(16 years 7 months 21 days)
Son
Edward II 9 October 1963 –
(Reigning)
Brother

Duchies[]

Image Name Reign Lifespan
Dukes of Brunswick
House of Welf
Frederick William the Black Duke 16 October 1806 – 16 June 1815
(8 years 8 months)
Founder
Charles II 16 June 1815 – 9 September 1830
(15 years 2 months 24 days)
Son
William VIII 9 September 1830 – 18 October 1884
(54 years 1 month 9 days)
Brother
18 October 1884 – 1 November 1913 Regency of Adalbert of Prussia and John Albert of Mecklenburg Schwerin
House of Hanover
Ernest Augustus I 1 November 1913 – 30 January 1953
(39 years 2 months 29 days)
regency ended on 1 November 1913 when Ernest Augustus, the Crown Prince of Hanover's son, was permitted to ascend to Duchy following his marriage to Princess Victoria Louise of Prussia
Ernest Augustus II 30 January 1953 – 9 December 1987
(34 years, 10 months and 9 days)
Son
Ernest Augustus III 9 December 1987 -
(Reigning)
Son
Dukes of Saxe Lauenburg
House of Hohenzollern
Wilhelm I 2 January 1861 – 9 March 1888
(27 years 2 months 7 days)
Son
Frederick III 9 March – 15 June 1888
(3 months 6 days)
Son
Wilhelm II 15 June 1888 – 9 November 1918
(30 years 4 months 25 days)
Son
Wilhelm III 9 November 1918 – 20 July 1951
(32 years 8 months 11 days)
Son
Louis Ferdinand 20 July 1951 – 26 September 1994
(43 years 2 months 6 days)
Son
Frederick IV 26 September 1994 – present Son
Duke of Saxe Altenburg
House of Saxe Altenburg
Frederick I 12 November 1826 – 29 September 1834
(7 years 10 months 17 days)
Founder
Joseph 29 September 1834 – 30 November 1848
(14 years 2 months 1 day)
Son
George I 30 November 1848 – 3 August 1853
(4 years 8 months 4 days)
Son
Ernest I 3 August 1853 – 7 February 1908
(54 years 6 months 4 days)
Son
Ernest II 7 February 1908 – 22 March 1955
(47 years 1 month 15 days)
Nephew
George II 22 March 1955 - 13 February 1991
(35 years 10 months 22 days)
Son
House of Saxe Weimar Eisenach
Charles Alexander II 14 October 1988 -
(Reigning)
Proximity of Blood
Dukes of Saxe-Coburg-Gotha
House of Saxe-Coburg-Gotha
Ernest I 12 November 1826 – 29 January 1844
(17 years 2 months 17 days)
Founder
Ernest II 29 January 1844 – 22 August 1893
(49 years 6 months 24 days)
Son
Alfred 22 August 1893 – 30 July 1900
(6 years 11 months 8 days)
Nephew
Charles Edward 30 July 1900 – 6 March 1954
(53 years 7 months 6 days)
Nephew
Friedrich Josias 6 March 1954 - 23 January 1998
(43 years 10 months 17 days)
Son
Andreas 23 January 1998 -
(Reigning)
Son
Dukes of Saxe-Meiningen
House of Saxe-Meiningen
Bernhard I 2 August 1691 - 27 April 1706
(14 years 8 months 25 days)
Founder
Ernst I 27 April 1706 - 24 November 1724
(18 years 6 months 28 days)
Son
Ernst II 24 November 1724 - 24 February 1729
(4 years 3 months)
Son
Karl Friedrich 24 February 1729 - 28 March 1743
(14 years 1 month 4 days)
Brother
Friedrich Wilhelm 28 March 1743 - 10 March 1746
(2 years 11 months 10 days)
Uncle
Anton Ulrich 10 March 1746 - 27 January 1763
(16 years 10 months 17 days)
Brother
Karl Wilhelm 27 January 1763 - 21 July 1782
(19 years 5 months 24 days)
Son
George I 21 July 1782 - 24 December 1803
(21 years 5 months 3 days)
Son
Bernhard II 24 December 1803 - 20 September 1866
(62 years 8 months 27 days)
Son
George II 20 September 1866 - 25 June 1914
(47 years 9 months 5 days)
Son
Bernhard III 25 June 1914 - 16 January 1928
(13 years 6 months 22 days)
Brother
Ernest III 16 January 1928 – 29 December 1941
(13 years 11 months 13 days)
Son
George III 29 December 1941 – 6 January 1946
(4 years 8 days)
Nephew
Bernhard IV 6 January 1946 – 4 October 1984
(38 years 8 months 28 days)
Brother
Konrad 23 January 1998 -
(Reigning)
Son
Dukes of Nassau
House of Nassau Weilburg
Frederick Augustus 17 May 1803 – 24 March 1816
(12 years 10 months 7 days)
Duke of Nassau
William I 24 March 1816 – 20 August 1839
(23 years 4 months 27 days)
Proximity of Blood
Adolphe 20 August 1839 – 17 November 1905
(66 years 2 months 28 days)
Son
William II 17 November 1905 – 25 February 1912
(6 years 3 months 8 days)
Son
Marie-Adélaïde 25 February 1912 – 14 January 1919
(abdicated)
(6 years 10 months 20 days)
Daughter
Charlotte 14 January 1919 – 12 November 1964
(abdicated)
(45 years 9 months 29 days)
Daughter
Jean 12 November 1964 – 7 October 2000
(abdicated)
(35 years 10 months 25 days)
Son
Henri 7 October 2000 -
(Reigning)
Son
Dukes of Schleswig-Holstein
House of Schleswig-Holstein
Wilhelm I 25 March 1816 – 17 February 1831
(14 years 10 months 23 days)
Founder
Charles 17 February 1831 – 14 October 1878
(47 years 7 months 27 days)
Son
Friedrich 14 October 1878 – 27 November 1885
(7 years 1 month 13 days)
Brother
Friedrich Ferdinand I 27 November 1885 – 21 January 1934
(48 years 1 month 25 days)
Son
Wilhelm II Friedrich 21 January 1934 – 10 February 1965
(31 years 20 days)
Son
Peter 10 February 1965 – 30 September 1980
(15 years 7 months 20 days)
Son
Christoph 30 September 1980 – 27 September 2023
(42 years 11 months 28 days)
Son
Friedrich Ferdinand II 27 September 2023
(Reigning)
Son

Principalities[]

Image Name Reign Lifespan
Monarchs of Waldeck and Pyrmont
House of Waldeck and Pyrmont
Friedrich Anton Ulrich 12 December 1706 – 1 January 1728
(21 years 20 days)
County elevated to Principality
Christian Philip 1 January 1728 – 17 May 1728
(4 months 16 days)
Son
Charles August 17 May 1728 – 29 August 1763
(35 years 3 months 12 days)
Brother
Frederick Charles August 29 August 1763 – 24 September 1812
(49 years 26 days)
Son
George I 24 September 1812 – 9 September 1813
(11 months 16 days)
Brother
George II 9 September 1813 – 15 May 1845
(31 years 8 months 6 days)
Son
George Victor 15 May 1845 – 12 May 1893
(47 years 11 months 27 days)
Son
Frederick 12 May 1893 – 26 May 1946
(53 years 14 days)
Son
Josias III 26 May 1946 – 30 November 1967
(21 years 6 months 4 days)
Son
Wittekind IV 30 November 1967 -
(Reigning)
Son
Monarchs of Reuss Gera
House of Reuss
Henry XLII 25 January 1784 - 17 April 1818
(34 years 2 months 23 days)
Elevated to Principality
Henry LXII 17 April 1818 – 19 June 1854
(36 years 2 months 2 days)
Son
Henry LXVII 19 June 1854 – 11 July 1867
(13 years 22 days)
Brother
Henry XIV 11 July 1867 – 29 March 1913
(45 years 8 months 18 days)
Son
Henry XXVII 29 March 1913 – 21 November 1928
(15 years 7 months 23 days)
Son
Henry XLV 21 November 1928 - 21 January 1946
(17 years 2 months)
Son
Henry IV 21 January 1946 - 20 June 2012
(66 years 4 months 30 days)
Son
Henry XIV 20 June 2012 -
(Reigning)
Relative
Monarchs of Reuss Greiz
House of Reuss
Henry XI 17 November 1723 – 28 June 1800
(76 years 7 months 11 days)
elevated to princely status
Henry XIII 28 June 1800 – 29 January 1817
(16 years 7 months 1 day)
Son
Henry XIX 29 January 1817 – 31 October 1836
(19 years 9 months 2 days)
Son
Henry XX 32 October 1836 – 8 November 1859
(23 years 8 days)
Brother
Henry XXII 8 November 1859 – 19 April 1902
(42 years 5 months 11 days)
Son
Henry XXIV 19 April 1902 - 13 October 1927
(25 years 5 months 24 days)
Son
Henry XXVII 13 October 1927 - 21 November 1928
(1 year 1 month 8 days)
Relative
Henry XLV 21 November 1928 - 21 January 1946
(17 years 2 months)
Son
Henry IV 21 January 1946 - 20 June 2012
(66 years 4 months 30 days)
Son
Henry XIV 20 June 2012 -
(Reigning)
Relative
Monarchs of Lippe
House of Lippe
Leopold I 1 May 1782 – 4 April 1802
(19 years 11 months 3 days)
elevated to princely status
Leopold II 4 April 1802 – 1 January 1851
(48 years 8 months 28 days)
Son
Leopold III 1 January 1851 – 8 December 1875
(24 years 11 months 7 days)
Son
Woldemar 8 December 1875 – 20 March 1895
(19 years 3 months 12 days)
Brother
Alexander 20 March 1895 – 13 January 1905
(9 years 9 months 24 days)
Brother
Leopold IV 13 January 1905 – 30 December 1949
(44 years 11 months 17 days)
Relative from the Lippe-Biesterfeld line
Leopold V 30 December 1949 – 20 August 2015
(65 years 7 months 21 days)
Son
Stephen 20 August 2015 –
(Reigning)
Son
Monarchs of Schaumburg Lippe
House of Schaumburg Lippe
George William 13 February 1787 – 21 November 1860
(73 years 9 months 8 days)
elevated to princely status
Adolphus I 21 November 1860 – 8 May 1893
(32 years 5 months 17 days)
Son
George 8 May 1893 – 29 April 1911
(17 years 11 months 21 days)
Son
Adolphus II 29 April 1911 – 26 March 1936
(24 years 10 months 26 days)
Son
Wolrad 26 March 1936 – 15 June 1962
(26 years 2 months 20 days)
Brother
Philip III 15 June 1962 – 28 August 2003
(41 years 2 months 13 days)
Son
Alexander 28 August 2003 –
(Reigning)
Son
Shwarzburg Sonderhaussen
House of Shwarzburg
Anton Günther II 19 August 1666 – 10 May 1721
(54 years 8 months 21 days)
Elevated to Prince
Christian William 29 August 1669 – 20 December 1716
(47 years 3 months 21 days)
Brother
Günther XLIII 10 May 1721 – 28 November 1740
(19 years 6 months 18 days)
Son of Anton Günther II
Henry XXXV 28 November 1740 – 6 November 1758
(17 years 11 months 9 days)
Brother
Christian Günther III 6 November 1758 – 14 October 1794
(35 years 11 months 8 days)
Nephew
Günther Friedrich Karl I 14 October 1794 – 19 August 1835
(40 years 10 months 5 days)
Son
Günther Friedrich Karl II 19 August 1835 – 17 July 1880
(44 years 10 months 28 days)
Son
Karl Günther 17 July 1880 – 28 March 1909
(28 years 8 months 11 days)
Son
Günther XLIV Victor 28 March 1909 - 16 April 1925
(16 years 19 days)
Blood Proximity
Sizzo IV 16 April 1925 – 24 March 1926
(11 months 8 days)
Son of Friedrich Günther II of Rudolstadt
Günther XLV 24 March 1926 – 9 November 1971
(45 years 7 months 16 days)
Son
Marie Antoinette 9 November 1971 – 4 November 1984
(12 years 11 months 26 days)
Sister
House of Solms Windelfels
Frederick II 4 November 1984 – 11 June 2025
(40 years 7 months 7 days)
Son
House of Waldeck
Henry XXXVI 11 June 2025 -
(Reigning)
Descendant of the house of schwarzburg through Princess Augusta of Schwarzburg-Sondershausen, proclaimed Heir to the throne in 1995
Shwarzburg Rudolstadt
House of Shwarzburg
Albert Anton 4 November 1646 – 15 December 1710
(64 years 1 month 11 days)
Elevated to Prince
Louis Frederick I 15 December 1710 – 24 June 1718
(7 years 6 months 9 days)
Son
Frederick Anton 24 June 1718 – 1 September 1744
(26 years 2 months 8 days)
Son
John Frederick 1 September 1744 – 10 July 1767
(22 years 10 months 9 days)
Son
Louis Günther III 10 July 1767 – 29 August 1790
(23 years 1 month 19 days)
son of Louis Frederick I
Frederick Charles 29 August 1790 – 13 April 1793
(2 years 7 months 15 days)
Son
Louis Frederick II 13 April 1793 – 28 April 1807
(14 years 15 days)
Son
Frederick Günther 28 April 1807 – 28 June 1867
(60 years 2 months)
Son
Albert 28 June 1867 – 26 November 1869
(2 years 4 months 29 days)
Brother
Georg Albert 28 November 1869 – 19 January 1890
(20 years 1 month 22 days)
Son
Günther XLIV Victor 19 January 1890 – 16 April 1925
(35 years 2 months 28 days)
first cousin once removed
Sizzo IV 16 April 1925 – 24 March 1926
(11 months 8 days)
Son of Friedrich Günther II
Günther XLV 24 March 1926 – 9 November 1971
(45 years 7 months 16 days)
Son
Marie Antoinette 9 November 1971 – 4 November 1984
(12 years 11 months 26 days)
Sister
House of Solms Windelfels
Frederick II 4 November 1984 – 11 June 2025
(40 years 7 months 7 days)
Son
House of Waldeck
Henry XXXVI 11 June 2025 -
(Reigning)
Descendant of the house of schwarzburg through Princess Augusta of Schwarzburg-Sondershausen, proclaimed Heir to the throne in 1995
Principality of Hohenzollern
House of Hohenzollern Sigmaringen
Johann 8 April 1606 - 22 March 1638
(31 years 11 months 14 days)
Elevated to prince
Meinrad I 22 March 1638 - 30 January 1681
(42 years 10 months 8 days)
Son
Maximilian 30 January 1681 - 13 August 1689
(8 years 6 months 14 days)
Son
Meinrad II 13 August 1689 - 20 October 1715
(26 years 2 months 7 days)
Son
Josef Friedrich Ernst 20 October 1715 - 8 December 1769
(54 years 1 month 18 days)
Son
Karl Friedrich I 8 December 1769 - 20 December 1785
(16 years 12 days)
Son
Anton Aloys 20 December 1785 - 17 October 1831
(45 years 9 months 27 days)
Son
Karl 17 October 1831 - 27 August 1848
(16 years 10 months 10 days)
Son
Karl Anton 27 August 1848 - 2 June 1885
(36 years 9 months 6 days)
Son
Leopold 2 June 1885 – 8 June 1905
(20 years 6 days)
Son
Wilhelm 8 June 1905 – 22 October 1927
(22 years 4 months 14 days)
Son
Friedrich 22 October 1927 – 6 February 1965
(37 years 3 months 15 days)
Son
Friedrich Wilhelm 6 February 1965 – 16 September 2010
(45 years 7 months 10 days)
Son
Karl Friedrich 16 September 2010 -
(Reigning)
Son