- Born on December 19, 1734 in Northampton
- Deceased on October 31, 1783 in Bath, at the age of 48 years
- Burial on November 9, 1783
Parents
- John Spencer (1708 - 1746), homme politique
- Georgiana Carolina Carteret (1716 - 1780), Countess Cowper
Family
- Married on December 20, 1755 in Northampton, with Georgina Poyntz (1737 - 1814), issuing
Charlotte- Louisa
- Georgiana (1757 - 1806)
- George John (1758 - 1834)
- Henrietta Frances (1761 - 1821)