Question: When was  Prince William, Duke of Cambridge father born 

Context articles: Duchess of Cambridge
Prince George of Cambridge
Elizabeth at 90: A Family Portrait
Louisa Hamilton, Duchess of Abercorn
Charles, Prince of Wales
Dorothy Clement
Wedding of Prince William and Catherine Middleton
Prince William, Duke of Cambridge
Amanda Pullinger
Prince William Cup

Duchess of Cambridge is the principal courtesy title held by the wife of the Duke of Cambridge.
 The title is legally gained upon marriage and is forfeited upon divorce.
 Five of the eight Dukes of Cambridge did not marry or morganate, and thus there are only three Duchesses of Cambridge including the current Duchess, Catherine, wife of Prince William, Duke of Cambridge.
Prince George of Cambridge (George Alexander Louis; born 22 July 2013) is the elder child and only son of Prince William, Duke of Cambridge, and Catherine, Duchess of Cambridge.
 He is third in line of succession to the British throne, after his paternal grandfather, and father.
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.
Louisa Jane Hamilton, Duchess of Abercorn, VA (née Lady Louisa Jane Russell) (8 July 1812 – 31 March 1905) was the wife of James Hamilton, 1st Duke of Abercorn, and the daughter of John Russell, 6th Duke of Bedford, by his second wife, Lady Georgiana Gordon.
 She was the mother of Louisa Montagu Douglas Scott, Duchess of Buccleuch, and therefore the paternal great grandmother of Princess Alice, Duchess of Gloucester, and the maternal 2nd great-grandmother of Prince William of Gloucester and Prince Richard, Duke of Gloucester.
 She was also the mother of James Hamilton, 2nd Duke of Abercorn, and therefore the paternal great-grandmother of Cynthia Spencer, Countess Spencer, and the paternal 3rd great-grandmother of Diana, Princess of Wales, and the maternal 4th great-grandmother of Prince William, Duke of Cambridge, and Prince Harry.
 Through her daughter Lady Louisa Hamilton she also is the maternal 3rd great-grandmother of Sarah, Duchess of York.
Charles, Prince of Wales (Charles Philip Arthur George; born 14 November 1948) is the eldest child and heir apparent of Queen Elizabeth II.
 Known alternatively in Cornwall as Duke of Cornwall and in Scotland as Duke of Rothesay, he is the longest-serving heir apparent in British history, having held the position since 1952.
 He is also the oldest person to be next in line to the throne since Sophia of Hanover (the heir presumptive to Queen Anne), who died in 1714 at the age of 83.
Dorothy Clement (c. 1715 – c. 1739) was the mistress of Edward Walpole and mother of his four children, including Maria Walpole, who became Duchess of Gloucester and Edinburgh upon her marriage to Prince William Henry, Duke of Gloucester and Edinburgh.
 Daughter of a Darlington postmaster, she is an ancestor of Prince William, Duke of Cambridge.
The wedding of Prince William, Duke of Cambridge, and Catherine Middleton took place on 29 April 2011 at Westminster Abbey in London, United Kingdom.
 The groom, Prince William, Duke of Cambridge, is the eldest son of Charles, Prince of Wales and Diana, Princess of Wales, and second, after his father, in line to succeed his paternal grandmother, Queen Elizabeth II.
Prince William, Duke of Cambridge, {'1': ", '2': ", '3': ", '4': "} (William Arthur Philip Louis; born 21 June 1982) is the elder son of Charles, Prince of Wales, and Diana, Princess of Wales.
 He is second in the line of succession to the British throne, after his father.
Amanda Pullinger is the Chief Executive Officer of 100 Women in Finance, formerly 100 Women in Hedge Funds.
 Ms. Pullinger has led the organization in its growth from a few hundred members in New York to more than 15,000 members in 21 cities globally.
 100 Women launched its new name and branding at the Closing Bell of the NYSE on December 14, 2016 In 2009, she succeeded in bringing in Britain’s Prince William, Duke of Cambridge as the Patron of 100 Women in Hedge Funds.
 Ms. Pullinger welcomed The Duke and Duchess of Cambridge to the 100WHF's London Gala in 2011.
 In late 2012, it was announced that the Duke and Duchess of Cambridge, and Prince Harry would all be Patrons of 100WHF's Philanthropic Initiatives beginning in January 2013.
 In October 2013, a day after the Royal Christening of Prince George, Ms. Pullinger welcomed HRH The Duchess of Cambridge to 100WHF's London Gala for the benefit of Action on Addiction.
 She then welcomed HRH The Duchess of Cambridge to 100WHF's 2015 Gala in London for the benefit of The Art Room.
The Prince William Cup was created in 2007 by the Welsh Rugby Union and celebrates 100 years of rugby union history between Wales and South Africa.
 It is named after the Vice Royal Patron of the WRU, Prince William, Duke of Cambridge, who presented the cup, amid much booing from the Millennium Stadium crowd, to the inaugural winners of the trophy in the inaugural Prince William Cup match held at the Millennium Stadium in Cardiff on Saturday 24 November 2007.