Viscounts Langford (1766)
- Elizabeth Rowley, 1st Viscountess Langford (1713–1791) Elizabeth was the daughter of Clotworthy Upton (MP in 1695 for the borough of Newton and in 1703 to his death; in June 1725 for the county of Antrim) and Jane Ormsby (daughter of John Ormsby MP of Limerick - John was born 1632 at Ballyvenogue, Limerick).
- Hercules Rowley, 2nd Viscount Langford (1737–1796)
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