William Windham belonged to the Felbrigg branch of the Windham family. He is sometimes referred to as Windham Ashe, apparently in confusion with his brother Joseph, who took the name of Ashe. In 1754 he was returned for Aldeburgh with the support of Government. By 1761 the main interest at Aldeburgh had passed to the Fonnereau family who returned both Members, and Windham was not a candidate at the general election. In 1763 he was recommended by Newcastle to Nathaniel Ryder for a seat expected to fall vacant at Tiverton. Newcastle described him as ‘of a very ancient family and considerable estate in Norfolk’.
Windham is not known to have spoken in the House. He was classed by Rockingham in November 1766 as ‘Whig’, i.e. as an adherent of Rockingham, and also by Charles Townshend in January 1767. On 22 Feb. 1767 Newcastle wrote to Albemarle in anticipation of the vote on the land tax: ‘I wish you would send to our friend Windham in your name and mine.’
Windham died 4 May 1789, aged 83.
