Biography
Frances Pierrepont was born 1 September 1630 in Thoresby, Nottinghamshire, England, United Kingdom to William Pierrepont (c1608-1679) and Elizabeth Harris (c1597-) and died 23 September 1695 London, England, United Kingdom of unspecified causes. She married Henry Cavendish, 2nd Duke of Newcastle (1630-1691) 1654 .
Children
| Name | Birth | Death | Joined with |
| Elizabeth Cavendish (1654-1734) | |||
| Henry Cavendish, Earl of Ogle (1659-1680) | |||
| Frances Cavendish (1660-1690) | |||
| Margaret Cavendish (1661-1716) | 22 October 1661 Welbeck, Nottinghamshire, England, United Kingdom | 26 December 1716 London, England, United Kingdom | John Holles, 1st Duke of Newcastle (1662-1711) |
| Catherine Cavendish (1665-1712) | |||
| Bassett Cavendish (1667-1667) | |||
| Arabella Cavendish (1673-1698) | 19 August 1673 | 4 June 1698 | Charles Spencer, 3rd Earl of Sunderland (c1674-1722) |