Question: When was the husband of Alexandra Anastasia Hamilton, Duchess of Abercorn born?

Context paragraphs:
Anastasia (1956 film): Anastasia is a 1956 American historical drama film directed by Anatole Litvak.  Set in interwar France, the film follows the story of a suicidal amnesiac (Ingrid Bergman), whose remarkable resemblance to the Grand Duchess Anastasia Nikolaevna of Russia — the youngest daughter of the late Tsar Nicholas II and Empress Alexandra Feodorovna, who is rumored to have survived the execution of her family — draws her into a plot devised by the former Russian White General Bounine (Yul Brynner) and his associates to swindle from the Grand Duchess an inheritance of £10 million.  However, the ultimate hurdle to their plan is the exiled Russian aristocracy — in particular the Dowager Empress Marie Feodorovna (Helen Hayes) — whom their handpicked claimant must convince of her legitimacy if they wish for their scheme to succeed.

Louisa Hamilton, Duchess of Abercorn: 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.

Mary Hamilton, Duchess of Abercorn: Mary Anna Hamilton, Duchess of Abercorn (née Curzon-Howe; 23 July 1848 – 10 May 1929), was an English aristocrat.  She was the daughter of Richard Curzon-Howe, 1st Earl Howe and Anne Gore.

Anna Anderson: Anna Anderson (16 December 1896 – 12 February 1984) was the best known of several impostors who claimed to be Grand Duchess Anastasia of Russia.  Anastasia, the youngest daughter of the last Tsar and Tsarina of Russia, Nicholas II and Alexandra, was killed along with her parents and siblings on 17 July 1918 by communist revolutionaries in Yekaterinburg, Russia; but the location of her body was unknown until 2007.

Duchess Anastasia of Mecklenburg-Schwerin: Duchess Anastasia Alexandrine Cecile Marie Luise Wilhelmine of Mecklenburg-Schwerin (Full German name: "Anastasia Alexandrine Cecile Marie Luise Wilhelmine Herzogin zu Mecklenburg-Schwerin"), (11 November 1923, Gelbensande, Free State of Mecklenburg-Schwerin, Weimar Republic – 25 January 1979, Hamburg, West Germany).  Anastasia was the youngest child and youngest daughter of Frederick Francis IV, Grand Duke of Mecklenburg-Schwerin and his wife Princess Alexandra of Hanover and Cumberland.

Georgina Kennard: Georgina, Lady Kennard (17 October 1919 – 28 April 2011), born Georgina Wernher, was a member of the British aristocracy who has been described as "one of the best connected women in the country" and "a distant cousin of the Queen and one of her closest friends".  Lady Kennard was the mother of Alexandra Hamilton, Duchess of Abercorn, and Natalia Grosvenor, Duchess of Westminster.  She was also an aunt of Maralyn Ramsay, Countess of Dalhousie, the sister of Myra Alice Wernher, Lady Butter, and a first cousin once removed of George Mountbatten, 4th Marquess of Milford Haven.  She was the godmother to the Queen's second son, Prince Andrew, Duke of York, who attended her funeral in person.

Kathleen Hamilton, Duchess of Abercorn: Kathleen Hamilton, Duchess of Abercorn, {'1': ", '2': ", '3': ", '4': "} (8 July 1905 – 2 February 1990)

James Hamilton, 5th Duke of Abercorn: James Hamilton, 5th Duke of Abercorn, {'1': ", '2': ", '3': ", '4': "} (born 4 July 1934) is a British nobleman, peer, and politician.  He became Duke of Abercorn in the Peerage of Ireland on the death of his father in June 1979.  He was the son of James Edward Hamilton, 4th Duke of Abercorn, and Lady Mary Crichton (daughter of Lt.-Col.  Henry William Crichton, Viscount Crichton (1872–1914), eldest son of John Crichton, 4th Earl Erne).  He is a former politician and Lord Steward of the Household.

Alexandra Hamilton, Duchess of Abercorn: Alexandra Anastasia "Sacha" Hamilton, Duchess of Abercorn, {'1': ", '2': ", '3': 'OBE', '4': "} (b. 27 February 1946, Tucson, Arizona, U.S.) is the wife of James Hamilton, 5th Duke of Abercorn.

Rosalind Hamilton, Duchess of Abercorn: Rosalind Cecilia Caroline Hamilton, Duchess of Abercorn, DBE (26 February 1869 – 18 January 1958) (née Lady Rosalind Bingham) was a British aristocrat and the Duchess of Abercorn by marriage.  She was a great-grandmother of Diana, Princess of Wales.

Supporting paragraphs: Alexandra Hamilton, Duchess of Abercorn James Hamilton, 5th Duke of Abercorn
Answer: 4 July 1934