Alessandra de Osma
Alessandra, Princess Christian of Hanover( née Alessandra de Osma) is a Peruvian attorney, handbag designer, and former model.
She is a member of the Hanoverian royal family through her marriage to Prince Christian of Hanover.
Princess Friederike of Hanover
Princess Friederike of Hanover( born 15 October 1954 at Salem, Baden- Württemberg, Germany) is a member of the Royal House of Hanover.
She is a niece of Prince Philip, Duke of Edinburgh.
Christian Bernardi (footballer)
Christian Oscar Bernardi( born 10 March 1990) is an Argentine professional footballer who plays as a midfielder for Argentine Primera División side Colón.
Prince Christian Oscar of Hanover
Prince Christian Oscar of Hanover (1 September 1919 – 10 December 1981) was the fourth child of Ernest Augustus, Duke of Brunswick and his wife Princess Victoria Louise of Prussia, the only daughter of Wilhelm II, German Emperor and Augusta Viktoria of Schleswig-Holstein.
Chantal Hochuli
Chantal Hochuli, formerly Chantal, Princess of Hanover, Duchess of Brunswick and Lüneburg( born 2 June 1955) is a Swiss socialite and heiress.
She is the ex-wife of Ernst August, Prince of Hanover, the head of the German House of Hanover.
Ekaterina Malysheva
Ekaterina, Hereditary Princess of Hanover( née Malysheva; born 30 July 1986) is a Russian fashion designer and filmmaker.
She is the hereditary princess of the House of Hanover through her marriage to Ernst August, Hereditary Prince of Hanover.
Thyra von Westernhagen
Thyra, Princess Heinrich of Hanover( née Thyra von Westernhagen; born 14 August 1973) is a German forester and landowner.
As the wife of Prince Heinrich of Hanover, she is a princess of the House of Hanover.
Prince Ernst August of Hanover (born 1983)
Ernst August, Hereditary Prince of Hanover( born 19 July 1983) is the eldest child of Ernst August, Prince of Hanover( head of the ancient House of Welf which once ruled the Kingdom of Hanover), and his former wife Chantal Hochuli.
Princess Victoria Louise of Prussia
Princess Victoria Louise of Prussia (Viktoria Luise Adelheid Mathilde Charlotte; 13 September 1892 – 11 December 1980) was the only daughter and the last child of German Emperor Wilhelm II and Augusta Victoria of Schleswig-Holstein.
She was a great-granddaughter of Queen Victoria through her father.
Her 1913 wedding to Prince Ernest Augustus of Hanover was the largest gathering of reigning monarchs in Germany since German unification in 1871, and one of the last great social events of European royalty before the First World War began fourteen months later.
Shortly after the wedding, she became the Duchess of Brunswick by marriage.
Through her daughter Frederica, Princess Victoria Louise was the maternal grandmother of Queen Sophia of Spain (mother of Felipe VI of Spain) and the former King Constantine II of Greece.
Theodred II (Bishop of Elmham)
Theodred II was a medieval Bishop of Elmham.
The date of Theodred's consecration unknown, but the date of his death was sometime between 995 and 997.

Question: When did Prince Christian Oscar Of Hanover's mother die?
Answer: 11 December 1980