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.
Grand Duke Nicholas Mikhailovich of Russia Grand Duke Nicholas Mikhailovich of Russia (Russian: "Великий князь" Никола́й Миха́йлович , 26 April 1859 – 28 January 1919) was the eldest son of Grand Duke Michael Nikolaevich of Russia and a first cousin of Alexander III.