Sackville Hamilton

Sackville Hamilton PC (Ire) (14 March 1732 – 29 January 1818) was an Anglo-Irish politician.

He was the third son of Hon. Henry Hamilton and his wife Mary Dawson, daughter of Joshua Dawson. His uncles were Frederick Hamilton and Gustavus Hamilton. His grandfather was Gustavus Hamilton, 1st Viscount Boyne and his younger brother was Henry Hamilton.

Hamilton entered the Irish House of Commons for St Johnstown (County Longford) in 1780 and sat for the constituency until 1783. Subsequently he was elected for Rathcormack and Clogher. He chose the latter and was a Member of Parliament for the constituency until 1795, resigning the seat to be Escheator of Munster, a notional 'office of profit under the crown'. In the following year he stood successfully for Armagh Borough, which he represented until 1798. In 1796, he was sworn of the Privy Council of Ireland. In 1780, Hamilton was appointed Under-Secretary to the Lord Lieutenant of Ireland. He held this post until February 1795 and again from May of the same year until 1796.

He married Arabella Berkeley, daughter of Reverend Robert Berkeley. They had a son.