- Born on June 16, 1761
- Deceased on November 14, 1821, at the age of 60 years
Parents
- John Spencer (1734 - 1783), Earl Spencer
- Georgina Poyntz (1737 - 1814)
Family
- Married on November 27, 1780, with Frederick Ponsonby (1758 - 1844), Earl of Bessborough, issuing
John William (1781 - 1847)- Frederick Cavendish (1783 - 1837)
- Caroline (1785 - 1828)
- William Francis (1787 - 1855)
- Relationship with Charles William Wyndham (1760 - 1828)