Biography
Mary Capell was born 13 October 1722 to William Capell, 3rd Earl of Essex (1698-1743) and Jane Hyde (c1699-1724) and died April 1782 of unspecified causes. She married John Forbes (1714-1796) 25 August 1758 .
Children
| Name | Birth | Death | Joined with |
| Maria Eleanor Forbes (1761-1844) | January 1761 | 18 March 1844 Clarendon House, North Audley Street, Mayfair, London, England, United Kingdom | John Charles Villiers, 3rd Earl of Clarendon (1757-1838) |
| Katherine Elizabeth Forbes (1761-1851) | January 1761 | 23 October 1851 Grosvenor Square, Mayfair, London, England, United Kingdom | William Wellesley-Pole, 3rd Earl of Mornington (1763-1845) |
Footnotes (including sources)
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