Brigadier-general William Wolseley, PC (c. 1640 – 1697) was an English army officer who fought in the Williamite War in Ireland.

[b][1] Wolseley's force of character and Protestant zeal were rewarded by the Prince of Orange, who conferred on him the lieutenant-colonelcy of Sir John Hanmer's regiment (11th foot).

At the same time Kirke, by virtue of the authority he had from William III, issued commissions to the Enniskillen officers, which at a later date were confirmed by the King.

[d] For twelve months prior to the Boyne, Wolseley, as commander of the Enniskillen troops, was engaged in almost constant raids against the Irish forces of King James.

Wolseley surprised and took Belturbet in December 1689, and on 12 February 1690 defeated the Duke of Berwick in an engagement before Cavan and captured that town, which he burnt.

[2] He rendered valuable service during the remainder of the Irish campaign, and was present with his regiment at the dearly bought victory of Aughrim (12 July 1691).