Princess Olga of Greece and Denmark Royalty
Princess Olga of Greece and Denmark (Greek: Πριγκίπισσα Όλγα της Ελλάδας και Δανίας, Serbian Cyrillic: Кнегиња Олга Карађорђевић; 11 June 1903 – 16 October 1997) was the granddaughter of King George I of Greece and wife of Paul, Prince Regent of Yugoslavia.