Family and Education
b. 31 Aug. 1781, 1st s. of Frederick Ponsonby†, 3rd earl of Bessborough [I] and 3rd Bar. Ponsonby [GB], and Lady Henrietta Frances Spencer, da. of John Spencer†, 1st Earl Spencer; bro. of Hon. Frederick Cavendish Ponsonby* and Hon. William Francis Spencer Ponsonby*. educ. Harrow 1790-8; Christ Church, Oxf. 1799; continental tour 1800, 1802-3. m. 16 Nov. 1805, Lady Maria Fane, da. of John, 10th earl of Westmorland, 7s. (2 d.v.p.) 6da. cr. Bar. Duncannon [UK] 19 July 1834; suc. fa. as 4th earl of Bessborough [I] and 4th Bar. Ponsonby [GB] 3 Feb. 1844. d. 16 May 1847.
Web Title
PONSONBY, John William, Visct. Duncannon (1781-1847)