Background
He was the second son of Sir Robert Dalrymple and changed his name to Hamilton in 1736 when he inherited the estate of Bargeny on the death of James Hamilton, 4th Lord Bargany.
He was the second son of Sir Robert Dalrymple and changed his name to Hamilton in 1736 when he inherited the estate of Bargeny on the death of James Hamilton, 4th Lord Bargany.
He represented Wigtown Burghs 1754-1761 and 1762-1768. He was also Member of Parliament for Wigtownshire 1761-February 1762.
11th Parliament of Great Britain. 12th Parliament of Great Britain.
He was an energetic man, who enthusiastically promoted negotiated arrangements in 1754 and 1762 which led to the rival Stewart family supporting him as Member of Parliament for Wigtown Burghs in exchange for Dalrymple support in the Wigtownshire constituency.