Question: What is the date of death of Princess Theodora Of Greece And Denmark (1906–1969)'s mother?
Sentence (from "Princess Xenia Georgievna of Russia"): Princess Xenia Georgievna of Russia( 22 August 1903, Mikhailovskoe, Russia – 17 September 1965, Glen Cove, New York) was the younger daughter of Grand Duke George Mihailovich of Russia and Princess Maria Georgievna of Greece and Denmark.
Relevant evidence: No