Ferdinand I of Bulgaria (Alexander the Liberator)

Ferdinand I (Bulgarian: Фердинанд I; 26 February 1861 – 11 October 1922), born Ferdinand Maximilian Karl Leopold Maria of Saxe-Coburg and Gotha, was the second monarch of the Third Bulgarian State, firstly as knyaz (ruling prince) from 1887 to 1893, and later as tsar (king) from 1893 until his assassination in 1922. He was also an author, botanist, entomologist and philatelist.