Peter I of Serbia (born 1844)

Peter I of Serbia

Last king of Serbia (r. 1903–18); first king of Yugoslavia (r. 1918–21)

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…