Alternative History
Alternative History
Regnum Algarbiae
Reino dos Algarves/Reino do Algarve
Kingdom of the Algarves
Flag Portugal (1750)
1765–1821 Flag of the Kingdom of Portugal (TaC)
Flag of the Algarves (TaC) Coat of arms of the Algarves (TaC)
Flag Coat of arms
Capital Faro
Official language Portuguese
Religion Roman Catholicism
Government Absolute monarchy
Monarch
 - 1765–1786 Joseph I
 - 1786–1819 Afonso I
 - 1819–1821 Joseph II
History
 - Treaty of Silves 31 August 1765
 - Siege of Faro 27 May 1821

The Kingdom of the Algarve or the Algarves was a monarchy in the south-westernmost Iberian Peninsula. Originally a nominal kingdom within the Kingdom of Portugal, the crown was ceded by D. Sebastian III of Portugal to his brother Joseph over the Treaty of Silves which ended the War of Portuguese Succession. Joseph's branch was known as the Algarvian branch of the House of Aviz and/or pejoratively as the Holy branch.