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.
Paul of Greece Paul (Greek: Παῦλος , "Pávlos"; 14 December 1901 – 6 March 1964) was King of Greece from 1947 until his death in 1964.