Ronald Ferguson Ronald Ferguson Major Ronald Ivor Ferguson (10 October 1931 – 16 March 2003) was the father of Sarah, Duchess of York, former wife to the Duke of York. He was the maternal grandfather of Princesses Beatrice and Eugenie of York. Major Ferguson was polo manager, initially to the Duke of Edinburgh and later, for many years, to the Prince of Wales. Ferguson was the son of Colonel Andrew Henry Ferguson (1899–1966) and his wife Marian Louisa Montagu Douglas Scott (1908–1996), a first cousin of Lady Alice Montagu Douglas Scott, who became (after her wedding to Prince Henry, Duke of Gloucester)
Mary Montagu, Duchess of Montagu Mary Montagu, Duchess of Montagu Mary Montagu, Duchess of Montagu (15 July 1689 – 14 May 1751), formerly Lady Mary Churchill, was a British court official and noble, the wife of John Montagu, 2nd Duke of Montagu. She was the youngest surviving daughter of John Churchill, 1st Duke of Marlborough, and his wife Sarah. She married Montagu on 17 March 1705, when he was Earl of Montagu. They had five children: From 1714 to 1717, the duchess was a Lady of the Bedchamber to the Princess of Wales. She was painted by Sir Godfrey Kneller in 1740. A portrait of