PONSONBY, William, Visct. Duncannon (c.1704-93).

Family and Education

b. c. 1704, 1st surv. s. of Brabazon, 1st Earl of Bessborough [I], and 1st Baron Ponsonby, by his 1st w. Sarah, da. of James Margetson of Sysonby, Leics., wid. of Hugh Colvill of Newtown, co. Down. educ. Grand Tour. m. 5 July 1739, Lady Caroline Cavendish, da. of William Cavendish, 3rd Duke of Devonshire, 5s. 4da. suc. fa. 4 July 1758.

Offices Held

M.P. [I] 1725 – 58.

P.C. [I] 19 Nov. 1741; sec. to ld. lt. [I] 1741 – 44; ld. of Admiralty 1746 – 56, of Treasury 1756 – 59; jt. postmaster gen. 1759 – 62, 1765 – 66; P.C. 12 July 1765.

biography text

Duncannon was returned for Derby in 1742 on the interest of his father-in-law, the Duke of Devonshire, who secured a seat on the Admiralty board for him in 1746 and an English barony for his father in 1749.1Walpole, Mems. Geo. II, i. 196. He died 11 Mar. 1793.

Author

R.R.S.

Volume

Commons 1715-1754

Notes

1. Walpole, Mems. Geo. II, i. 196.