About Peter II of Yugoslavia
Peter II Karađorđević (Serbo-Croatian: Петар II Карађорђевић, Petar II Karađorđević; 6 September 1923 – 3 November 1970) was the last King of Yugoslavia, reigning from October 1934 until he was deposed in November 1945. He was the last reigning member of the Karađorđević dynasty. The eldest child of King Alexander I and Maria of Romania, Peter acceded to the Yugoslav throne in 1934 at the age of 11 after his father was assassinated during a state visit to Marseille. A regency was set up under his cousin Prince Paul. After Paul declared Yugoslavia's accession to the Tripartite Pact in late March 1941, a pro-British coup d'état deposed the regent and declared Peter of age. In response, Axis forces invaded Yugoslavia ten days later and quickly overran the country, forcing the king and his ministers into exile. A government-in-exile was set up in June 1941 following Peter's arrival at London. In March 1944, he married Princess Alexandra of Greece and Denmark. Their only son, Alexander, was born a year later. In November 1945, the Yugoslav Constituent Assembly formally deposed Peter and proclaimed Yugoslavia a republic. Peter settled in the United States after his deposition. Suffering from depression and alcoholism later in his life, he died of cirrhosis in November 1970, aged 47. His remains were buried at the Saint Sava Monastery Church in Libertyville, Illinois, before being transferred to the Royal Mausoleum of Oplenac in 2013. Initially the Yugoslav king and his government ministers went to Greece where they refuelled at a British airfield in rural Greece where locals did not at first believe that he was king of Yugoslavia. The cabinet in a rare show of unity had all objected to Peter's plans for a wedding in wartime when the issue was first discussed in April 1942, and the issue was not raised again until April 1943. Pavlowitch called a "romanticized" picture of the young Peter, who became a "symbol of his country's struggle to keep its freedom in alliance with Great Britain". In September 1941, a liaison mission from the Special Operations Executive (SOE) parachuted into Yugoslavia to meet Mihailović, and afterwards, became the main means which Mihailović communicated with the Allies.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.