Elizabeth at 90: A Family Portrait is a 2016 television documentary film made to commemorate the 90th birthday of Queen Elizabeth II.
 It was produced by the BBC and directed by John Bridcut, and narrated by Charles, Prince of Wales.
 Aside from archive footage, the programme featured extensive footage shot by the Queen, Prince Philip, Duke of Edinburgh, Princess Margaret, King George VI and Queen Elizabeth the Queen Mother.
 The footage had never been publicly shown and came from the Queen's private archive of homemade films.
 The footage shown was interspersed with members of the British royal family commenting on the films.
 The film featured contributions from the Queen, the Prince of Wales, Anne, Princess Royal, Prince William, Duke of Cambridge and Prince Harry, Lady Sarah Chatto, Prince Edward, Duke of Kent and Princess Alexandra, The Honourable Lady Ogilvy.
Lady Elizabeth Sarah Lavinia McCorquodale (née Spencer; born 19 March 1955) is the eldest daughter of John Spencer, 8th Earl Spencer, and the Hon. Frances Shand Kydd.
 She is the sister of Diana, Princess of Wales.
Lady Sarah Wilson, RRC (4 July 1865 – 22 October 1929), born Lady Sarah Isabella Augusta Spencer-Churchill, became one of the first woman war correspondents in 1899, when she was recruited by Alfred Harmsworth to cover the Siege of Mafeking for the "Daily Mail" during the Second Boer War.
Somerset Richard Butler, 3rd Earl of Carrick (28 September 1779 – 4 February 1838) was the son of Henry Thomas Butler, 2nd Earl of Carrick and Sarah Taylor.
 He succeeded to the title of 3rd Earl of Carrick and 10th Viscount Ikerrin upon his father's death on 20 July 1813.
 He was married twice, first on 1 September 1811 to Anne Wynne, daughter of Owen Wynne and Lady Sarah Cole.
 They had two children.
 He married secondly on 12 February 1833 Lucy French, daughter of Arthur French.
 They had three children.
Raine, Countess Spencer (née McCorquodale ; 9 September 1929 – 21 October 2016) was a British socialite and local politician formerly known, by prior marriages, as the Comtesse Jean-François Pineton de Chambrun, Lady Dartmouth and Lady Lewisham.
 She was the daughter of Alexander McCorquodale and the romantic novelist and socialite Dame Barbara Cartland.
Edward John "Johnnie" Spencer, 8th Earl Spencer, (24 January 1924 – 29 March 1992), styled Viscount Althorp until June 1975, was a British peer and the father of Diana, Princess of Wales.
Colonel George Napier (11 March 1751 – 13 October 1804), styled "The Honourable", was a British Army officer, most notable for his marriage to Lady Sarah Lennox, and for his sons Charles James Napier, William Francis Patrick Napier and George Thomas Napier, all of whom were noted military officers, collectively referred to as "Wellington’s Colonels".
 He also served as Comptroller of Army Accounts in Ireland from 1799 until his death in 1804.
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Gaming in public was not acceptable for aristocratic women as it was for aristocratic men in 18th century England, who played at social clubs such as the Tory-affiliated White's or the Whig-affiliated Brooks’s.
 Thus, women gambled in private houses at social gatherings that often provided other, more socially acceptable forms of entertainment, such as musical concerts or amateur theatricals.
 A group of aristocratic women came to be well known for the faro tables they hosted late into the night.
 Mrs. Albinia Hobart (later Lady Buckinghamshire), Lady Sarah Archer, Mrs. Sturt, Mrs. Concannon, and Lady Elizabeth Luttrell were common figures in the popular press throughout the 1790s.
The Lennox sisters were eighteenth-century British aristocrats, the daughters of Charles Lennox, 2nd Duke of Richmond (1701–50) and his wife, the former Lady Sarah Cadogan (1705–1751).
 Four sisters—Caroline (1723–74), Emily (1731–1814), Louisa (1743–1821), and Sarah (1745–1826)—married prominent men and attracted varying degrees of admiration or notoriety.
 A fifth sister died aged 19, and two others in infancy.
Sarah Sophia Child Villiers, Countess of Jersey (4 March 1785 – 26 January 1867), born Lady Sarah Fane, was an English noblewoman, and through her marriage a member of the Villiers family.
 She was the eldest daughter of John Fane, 10th Earl of Westmorland, and Sarah Anne Child.
 Her mother was the only child of Robert Child, the principal shareholder in the banking firm Child & Co. Under the terms of his will, the Countess of Jersey was the primary legatee, and she not only inherited Osterley Park but became senior partner of the bank.
 Her husband, George Villiers, added the surname Child by royal licence.

Question: Who was styled by the person who is the father of Lady Sarah McCorquodale?
Answer: Viscount Althorp