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.
Princess Maria Annunciata of Bourbon-Two Sicilies Princess "Maria Annunciata" Isabella Filomena Sabasia of Bourbon-Two Sicilies, full Italian name: "Maria Annunziata Isabella Filomena Sabasia, Principessa di Borbone delle Due Sicilie" (24 March 1843 – 4 May 1871) was the mother of Archduke Franz Ferdinand, the archduke whose assassination in Sarajevo in 1914 precipitated the start of World War I.