- Born on September 13, 1731
- Deceased on May 17, 1814, at the age of 82 years
Parents
- Arthur Onslow (1691 - 1768), speaker of the House of Commons, Member of Parliament for Guildford
- Anne Bridges (1703 - 1763)
Family
- Married on June 26, 1753 in Thames Ditton, with Henrietta Shelley (1731 - 1809), issuing
- Edward (1758 - 1829)
Occupations
- lord-lieutenant of Surrey
- Member of Parliament for Rye (1754 - 1761)
- Member of Parliament for Surrey (1761 - 1774)