Alexander, Crown Prince of Yugoslavia

Alexander, Crown Prince of Serbia and Yugoslavia (Serbian: Александар Карађорђевић, Престолонаследник Србије и Југославије, romanized: Aleksandar Karađorđević, Prestolonaslednik Srbije i Jugoslavije; born 17 July 1945), is the head of the House of Karađorđević, the former royal house of the defunct Kingdom of Yugoslavia and its predecessor the Kingdom of Serbia. Alexander is the only child of King Peter II and Princess Alexandra of Greece and Denmark.

Source: Wikipedia — Alexander, Crown Prince of Yugoslavia (CC BY-SA 4.0)