MANSEL, Sir William, 9th Bt. (1739-1804), of Iscoed, Carm.

Published in The History of Parliament: the House of Commons 1754-1790, ed. L. Namier, J. Brooke., 1964
Available from Boydell and Brewer



1784 - 1790

Family and Education

b. 1 Mar. 1739, o.s. of Sir Richard Mansel, 8th Bt., by his 2nd w. Rebecca, da. of William Ware of Farranalough, co. Cork.  m. 26 Aug. 1765, Mary, da. of John Philipps of Coedgain, sis. of George Philipps, 7s. 4da.  suc. fa. Feb. 1749.

Offices Held


Mansel was returned unopposed for Carmarthenshire in 1784 as a follower of Pitt. His only known vote was with Administration on Richmond’s fortifications plan, 27 Feb. 1786, and there is no record of his having spoken in the House. In 1789 he began to canvass Carrnarthen borough against the next general election, and complained to Lord Hawkesbury of the little support he received from Administration:1 ‘I believe my political principles are well known, and from which I shall never depart, therefore am the more surprised I have not better support from those in power.’ Probably his absence from the divisions on the Regency did not commend him to Pitt. In the event Mansel did not stand in 1790.

He died 3 Jan. 1804.

Ref Volumes: 1754-1790

Author: Peter D.G. Thomas


  • 1. Add. 38458, ff. 161-2.