Sir William Parsons, 4th Baronet
Sir William Parsons, 4th Baronet of Birr Castle was an Irish politician and baronet.
He was the son of Sir Laurence Parsons, 3rd Baronet and Mary Sprigge. From 1757 until his death in 1797, Parsons served as Member of Parliament in the Irish House of Commons for King's County. He was High Sheriff of King's County in 1779.He married Mary Clere, daughter of John Clere, on 28 June 1754.