General James St Clair-Erskine, 2nd Earl of Rosslyn, GCB, PC (6 February 1762 – 18 January 1837) was a Scottish military officer, politician and peer who served as Lord President of the Council from 1834 to 1835.

In 1806, he was a member of the special mission to Lisbon, which resulted in Sir Arthur Wellesley (later the Duke of Wellington) being sent to the Peninsular.

[2] Erskine was a member of the House of Commons for the English pocket boroughs of Castle Rising between 1782 and 1784[3] and Morpeth between 1784 and 1796.

[4] Initially a Whig, an adherent of Edmund Burke and an active supporter of Charles James Fox against William Pitt the Younger in the debates over the East India Company, he was one of the managers of the Impeachment of Warren Hastings.

[citation needed] In 1796, he was elected for the Dysart Burghs in Fife,[5] a constituency traditionally under the St Clair influence.