William Stewart, 1st Earl of Blessington

William Stewart, 1st Earl of Blessington (7 April 1709 – 14 August 1769)[1] was an Anglo-Irish peer and member of the House of Lords, styled The Honourable William Stewart until 1728 and known as The Viscount Mountjoy from 1728 to 1745.

They had two children, William Stewart and Lionel Robert, both of whom died before their father.

He was created Earl of Blessington on 7 December 1745, his mother having been sister and sole heiress of Charles, 2nd and last Viscount Blesington.

[2] He was made Governor of County Tyrone and in 1748, was sworn of the Privy Council of Ireland.

His peerages became extinct, but his baronetcy was inherited by a distant cousin, Sir Annesley Stewart.