Question: What is the date of death of Princess Eugénie Of Greece And Denmark's mother?

Knowledge 1: Princess Eugénie of Greece and Denmark
Princess Eugénie of Greece and Denmark  (10 February 1910 – 13 February 1989) was the youngest child and only daughter of Prince George of Greece and Denmark and his wife, Princess Marie Bonaparte, daughter of Marie-Félix Blanc and Prince Roland Bonaparte, a great-nephew of Napoleon I.Her father was the second son of George I of Greece and Olga Constantinovna of Russia.As a cousin of the bridegroom, she was a leading guest at the 1947 wedding of Princess Elizabeth and Philip, Duke of Edinburgh.She authored "Le Tsarevitch, Enfant Martyr", a biography of Aleksey Nikolaevich, Tsarevich of Russia, written in French, which was published in 1990. [SEP] Knowledge 2: Princess Marie Bonaparte
Princess Marie Bonaparte (2 July 1882 – 21 September 1962), known as Princess George of Greece and Denmark upon her marriage, was a French author and psychoanalyst, closely linked with Sigmund Freud.Her wealth contributed to the popularity of psychoanalysis, and enabled Freud's escape from Nazi Germany.Marie Bonaparte was a great-grandniece of Emperor Napoleon I of France.She was the only child of Prince Roland Bonaparte (19 May 1858 – 14 April 1924) and Marie-Félix Blanc (1859–1882).Her paternal grandfather was Prince Pierre Napoleon Bonaparte, son of Lucien Bonaparte, 1st Prince of Canino and Musignano, Napoleon's rebellious younger brother.For this reason, despite her title Marie was not a member of the dynastic branch of the Bonapartes who claimed the French imperial throne from exile.Her maternal grandfather was François Blanc, the principal real-estate developer of Monte Carlo.It was from this side of her family that Marie inherited her great fortune.
Knowledge 1: Princess Eugénie of Greece and Denmark
Princess Eugénie of Greece and Denmark  (10 February 1910 – 13 February 1989) was the youngest child and only daughter of Prince George of Greece and Denmark and his wife, Princess Marie Bonaparte, daughter of Marie-Félix Blanc and Prince Roland Bonaparte, a great-nephew of Napoleon I.Her father was the second son of George I of Greece and Olga Constantinovna of Russia.As a cousin of the bridegroom, she was a leading guest at the 1947 wedding of Princess Elizabeth and Philip, Duke of Edinburgh.She authored "Le Tsarevitch, Enfant Martyr", a biography of Aleksey Nikolaevich, Tsarevich of Russia, written in French, which was published in 1990. [SEP] Knowledge 2: Princess Anastasia of Greece and Denmark
Princess Anastasia of Greece and Denmark ("née" Nonie May Stewart; 20 January 1878 – 29 August 1923) was an American-born heiress and member of the Greek Royal Family.She was married to Prince Christopher of Greece and Denmark, the youngest child of King George I of Greece and his consort, Grand Duchess Olga Constantinovna of Russia, but was created a princess "suo jure".
Knowledge 1: Princess Marie Bonaparte
Princess Marie Bonaparte (2 July 1882 – 21 September 1962), known as Princess George of Greece and Denmark upon her marriage, was a French author and psychoanalyst, closely linked with Sigmund Freud.Her wealth contributed to the popularity of psychoanalysis, and enabled Freud's escape from Nazi Germany.Marie Bonaparte was a great-grandniece of Emperor Napoleon I of France.She was the only child of Prince Roland Bonaparte (19 May 1858 – 14 April 1924) and Marie-Félix Blanc (1859–1882).Her paternal grandfather was Prince Pierre Napoleon Bonaparte, son of Lucien Bonaparte, 1st Prince of Canino and Musignano, Napoleon's rebellious younger brother.For this reason, despite her title Marie was not a member of the dynastic branch of the Bonapartes who claimed the French imperial throne from exile.Her maternal grandfather was François Blanc, the principal real-estate developer of Monte Carlo.It was from this side of her family that Marie inherited her great fortune. [SEP] Knowledge 2: Princess Anastasia of Greece and Denmark
Princess Anastasia of Greece and Denmark ("née" Nonie May Stewart; 20 January 1878 – 29 August 1923) was an American-born heiress and member of the Greek Royal Family.She was married to Prince Christopher of Greece and Denmark, the youngest child of King George I of Greece and his consort, Grand Duchess Olga Constantinovna of Russia, but was created a princess "suo jure".

Answer: 21 September 1962