Peter I was King of Serbia from 15 June 1903 to 1 December 1918. On 1 December 1918, he became King of the Serbs, Croats and Slovenes, and he held that title until his death three years later. Since he was the king of Serbia during a period of great Serbian military success, he was remembered by Serbians as King Peter the Liberator and also as the Old King.
King Peter in 1904
Peter, c. 1865
Peter in guerrilla uniform, c. 1875
Peter (far left, standing) with his family in Cetinje, c. 1890
Alexander Karađorđević, Prince of Serbia
Alexander Karađorđević was the prince of Serbia between 1842 and 1858 and a member of the House of Karađorđević.
Prince Alexander, painted by circle of Johann Böss
Prince Alexander of Serbia, painted by Uroš Knežević
Alexander's wife, Princess Persida