The son of Oswald Mosley of Bolesworth Castle (d. 1789); educated at Rugby and Brasenose Collge, Oxford, he wrote on natural history and was a Whig MP for Portarlington (1806-07), Winchelsea (1807-12), Midhurst (1817-18) and Staffordshire North (1832–37).

REFERENCES TO Sir Oswald Mosley, second baronet:

Robert Southey to Nicholas Lightfoot, 12 July 1829 in The Life and Correspondence of Robert Southey (London: 1849-1850)

Robert Southey to Robert Gooch, 8 August 1829 in The Life and Correspondence of Robert Southey (London: 1849-1850)