1. | William Hillier (4th Earl of Onslow) Onslow was born on 7 Mar 1853; died on 23 Oct 1911. Family/Spouse: Hon Florence Coulston Gardner. Florence was born about 1853; and died. [Group Sheet] [Family Chart]
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2. | Gwendolen Florence Mary Onslow ![]() Gwendolen married Rupert Edward Cecil Lee (2nd Earl of Iveagh) Guinness in 1927. Rupert was born on 29 Mar 1874; died on 14 Sep 1967. [Group Sheet] [Family Chart]
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3. | Lady Brigid Katharine Rachel Guinness ![]() Brigid married Prince Frederick of Prussia on 30 Jul 1945 in Little Hadham, Hertfordshire. Frederick was born on 19 Dec 1911; died on 20 Apr 1966. [Group Sheet] [Family Chart]
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4. | Princess Antonia Elizabeth Brigid Louise (of Prussia) Mansfeld ![]() Antonia married Arthur Charles Valerian (9th Duke of Wellington, 10th Duke of Ciudad Rodrigo Wellesley [Group Sheet] [Family Chart]
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