Caroline Cavendish was born 22 May 1719 to William Cavendish, 3rd Duke of Devonshire (1698-1755) and Catherine Hoskins (c1700-1777) and died 20 January 1760 of unspecified causes. She married William Ponsonby, 2nd Earl of Bessborough (1704-1793) 5 July 1739 .
|Offspring of William Ponsonby, 2nd Earl of Bessborough and Caroline Cavendish (1719-1760)|
|Catherine Ponsonby (1742-1789)|
|Charlotte Ponsonby (c1750-1822)|
|Frederick Ponsonby, 3rd Earl of Bessborough (1758-1844)||24 January 1758||3 February 1844 Canford House, Dorset, England, United Kingdom||Henrietta Frances Spencer (1761-1821)|