Prince Nicholas of Greece and Denmark was the son of which king that was assassinated in 1913?
George I of Greece George I (Greek: Γεώργιος Α΄ , "Geórgios I"; born Prince William of Schleswig-Holstein-Sonderburg-Glücksburg; 24 December 1845 – 18 March 1913) was King of Greece from 1863 until his assassination in 1913.
Danilo, Crown Prince of Montenegro Danilo Aleksandar Petrović-Njegoš (29 June 1871 – 24 September 1939) was the Crown Prince of Montenegro. He was the eldest son of King Nicholas I of Montenegro and Queen Milena Vukotić.