Mary of Teck
Mary of Teck (Victoria Mary Augusta Louise Olga Pauline Claudine Agnes; 26 May 1867 – 24 March 1953) was Queen consort of the United Kingdom and the British Dominions and Empress consort of India as the wife of King George V.
Although technically a princess of Teck, in the Kingdom of Württemberg, she was born and raised in the United Kingdom.
Her parents were Francis, Duke of Teck, who was of German extraction, and Princess Mary Adelaide of Cambridge, who was a granddaughter of King George III.
She was informally known as "May", after her birth month.
At the age of 24, she was betrothed to her second cousin once removed Prince Albert Victor, Duke of Clarence and Avondale, the eldest son of the Prince of Wales, but six weeks after the announcement of the engagement, he died unexpectedly during an influenza pandemic.
The following year, she became engaged to Albert Victor's only surviving brother, George, who subsequently became king.
Before her husband's accession, she was successively Duchess of York, Duchess of Cornwall, and Princess of Wales.
As queen consort from 1910, she supported her husband through the First World War, his ill health, and major political changes arising from the aftermath of the war.
After George's death in 1936, she became queen mother when her eldest son, Edward VIII, ascended the throne, but to her dismay, he abdicated later the same year in order to marry twice-divorced American socialite Wallis Simpson.
She supported her second son, George VI, until his death in 1952.
She died the following year, during the reign of her granddaughter Elizabeth II, who had not yet been crowned.
Adolphus Cambridge, 1st Marquess of Cambridge
Adolphus Cambridge, 1st Marquess of Cambridge, (Adolphus Charles Alexander Albert Edward George Philip Louis Ladislaus; 13 August 1868 – 24 October 1927), born Prince Adolphus of Teck and later The Duke of Teck, was a relative of the British Royal Family, a great-grandson of King George III and younger brother of Queen Mary, the wife of King George V.
In 1900, he succeeded his father as Duke of Teck in the Kingdom of Württemberg.
He relinquished his German titles in 1917 to become Marquess of Cambridge.
Duke Alexander of Württemberg (1804–1885)
Duke Alexander Paul Ludwig Konstantin of Württemberg( 9 September 1804, Saint Petersburg – 4 July 1885 Tüffer) was the father of Francis, Duke of Teck and the grandfather of Mary of Teck, wife of George V of the United Kingdom.
His father was Duke Louis of Württemberg, brother of King Frederick I of Württemberg and Empress Maria Feodorovna of Russia.
His mother was Princess Henriette of Nassau- Weilburg, a great- granddaughter of George II of Great Britain through his eldest daughter Anne, Princess of Orange.
Adalbert I, Duke of Teck
Adalbert I, Duke of Teck was a German nobleman.
After the death of his brother Berthold IV, he styled himself" Duke of Teck", and thus founded the elder line of the Dukes of Teck, which existed until 1439.
Christian Karl Reinhard of Leiningen-Dagsburg-Falkenburg
Count Christian Karl Reinhard of Leiningen-Dagsburg-Falkenburg (17 July 1695, Mülheim an der Ruhr – 17 November 1766, Heidesheim) was a German nobleman.
He was a great-great-great-grandfather of Mary of Teck.
Prince Francis of Teck
Prince Francis of Teck, (Francis Joseph Leopold Frederick; 9 January 1870 – 22 October 1910) was the brother of the British queen Mary of Teck, wife of King George V.
Countess Claudine Rhédey von Kis-Rhéde
Countess Claudine Rhédey von Kis- Rhéde( baptised 21 September
1812 – 1 October 1841) was the Hungarian wife of Duke Alexander of Württemberg.
Her son, Francis, Duke of Teck, was the father of Mary of Teck, queen consort to George V of the United Kingdom.
Francis, Duke of Teck
Francis, Duke of Teck GCB GCVO
(Francis Paul Charles Louis Alexander; 28 August 1837 – 21 January 1900), known as Count Francis von Hohenstein until 1863, was an Austrian-born nobleman who married into the British royal family.
He was the father of Queen Mary, and thus a great-grandfather of the current British monarch, Queen Elizabeth II.
Francis held the Austrian title of Count of Hohenstein ("Graf von Hohenstein"), and the German titles of Prince ("Fürst") and later Duke of Teck ("Herzog von Teck"), and was given the style of Serene Highness in 1863.
He was granted the British style of Highness in 1887.
Lord Frederick Cambridge
Lord Frederick Cambridge( Frederick Charles Edward, born Prince Frederick of Teck; 24 September 1907 – 15 May 1940) was a descendant of the British Royal Family.
He was the younger son of Adolphus Cambridge, 1st Marquess of Cambridge, formerly the Duke of Teck, and a nephew of Queen Mary, the consort of King George V.
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 Mary Of Teck's father die?
Answer: 21 January 1900