Parents
- Charles Wyndham (1710 - 1763), Earl of Egremont, privy counsellor, member of parliament for Bridgwater
- Alicia Carpenter (1726 - 1794)
Famille
- Mariée le 30 août 1776, avec Charles Marsham (1744 - 1811), Earl of Romney, member of parliament for Maidstone, member of parliament for Kent, dont
- Charles (1777 - 1845)
- Frances (1778 - 1868)
- Harriet (1780 - 1825)
- Amelia Charlotte (1782 - 1863)