General James St Clair-Erskine, 2nd Earl of Rosslyn, (6 February 1762 – 18 January 1837) was a British Army officer and politician who served as Lord President of the Council from 1834 to 1835.
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Background and education
Erskine was the son of Lieutenant-General Sir Henry Erskine, 5th Baronet, and Janet, daughter of Peter Wedderburn (a Lord of Session under the judicial title of Lord Chesterhall) and sister of Alexander Wedderburn, 1st Earl of Rosslyn. Lord Rosslyn's earldom had been created with special remainder to his nephew, Erskine. Erskine succeeded as sixth baronet in 1765, at the age of three, on the death of his father. He was educated at Edinburgh High School and Eton, and was commissioned in the 21st Light Dragoons in 1778.
Military career
Erskine was assistant Adjutant-General in Ireland in 1782. In 1793, he became Adjutant-General, in which capacity he served at the Siege of Toulon and Corsica. In 1795, he was promoted to colonel and appointed Aide-de-Camp to King George III. He became a major-general in 1798, lieutenant-general in 1805, and general in 1814. 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. He also saw action in Denmark