- Born on October 7, 1732
- Deceased on March 4, 1799 in London, at the age of 66 years
Parents
- William Capell (1697 - 1743), Earl of Essex, privy counsellor, lord-lieutenant of Hertfordshire
- Elizabeth Russell (1704 - 1784)
Family
- Married on August 1, 1754, with Frances Williams (1735 - 1759)
- Married on March 3, 1767, with Harriet Bladen (1734 - 1821), issuing
- John Thomas (1769 - 1819)
Occupations
- master of the Staghounds (1770 - )
- lord-lieutenant of Hertfordshire (1764 - 1771)