Viscounts Mountjoy (1683)
- William Stewart, 1st Viscount Mountjoy (1653–1692)
- William Stewart, 2nd Viscount Mountjoy (d. 1728)
- William Stewart, 3rd Viscount Mountjoy (1709–1769) (created Earl of Blessington in 1745)
Read more about this topic: Stewart Baronets