Campbell succeeded his brother John in 1743, having been created earl of Islay [S] in 1706. He was a keen supporter of the Union and fought on the government side at Sheriffmuir in 1715. He held the privy seal [S] 1721–33 and the great seal [S] from 1733 until his death. For many years he was the Whig government's adviser on Scottish affairs. While his brother was high‐spirited, imperious, and a celebrated orator, Islay was a man of business.
Subjects: British History — Modern History (1700 to 1945).