The Earl bears the subsidiary title of Baron Loughborough (1795), in the Peerage of Great Britain, and is a baronet of Nova Scotia (1666).
Earls of Rosslyn (1801) Alexander Wedderburn, 1st Earl of Rosslyn (1733-1805) James St Clair-Erskine, 2nd Earl of Rosslyn (1762-1837) James St Clair-Erskine, 3rd Earl of Rosslyn (1802-1866) Robert St Clair-Erskine, 4th Earl of Rosslyn (1833-1890) James St Clair-Erskine, 5th Earl of Rosslyn (1869-1939) Anthony St Clair-Erskine, 6th Earl of Rosslyn (1917-1977) Peter St Clair-Erskine, 7th Earl of Rosslyn (b. 1958)
