William Knollys

William Knollys (15 October 1694 – 6 June 1740), known as Viscount Wallingford, of St George's, Hanover Square, Westminster, was a British Army officer and politician who sat in the House of Commons from 1733 to 1740.

Knollys was the eldest surviving son of Charles Knollys of Oxfordshire and his wife Elizabeth Lister, daughter of Michael Lister of Burwell, Lincolnshire. He joined the army and was ensign in Colonel Pocock's regiment in 1715 and cornet in the 2nd Dragoon Guards in 1718 of which he was lieutenant in 1727. He married his first cousin, Mary Catherine Law, daughter of John Law, director general of the French finances, and his aunt Catherine Knollys.