John Hamilton-Leslie, 9th Earl of Rothes

John Hamilton-Leslie, 9th Earl of Rothes (1679–1722) was a Scottish nobleman who fought on the side of George I during the Jacobite rising of 1715.

Hamilton-Leslie was the eldest son of Charles Hamilton, 5th Earl of Haddington and Margaret Leslie, 8th Countess of Rothes. In 1701, Hamilton-Leslie succeeded his mother as Earl of Rothes, the chief of Clan Leslie. His younger brother became Thomas Hamilton, 6th Earl of Haddington.

On 29 April 1697, Hamilton-Leslie married Lady Jean Hay, the daughter of John Hay, 2nd Marquess of Tweeddale. The couple had eight sons and four daughters.

In 1704, Hamilton-Leslie was appointed Keeper of the Privy Seal of Scotland. In 1707, after the passage of the Acts of Union by the English and Scottish Parliaments, Hamilton-Leslie was appointed as one of the 16 Scottish Representative peers to sit in the English House of Lords. Some Scottish opponents of the union accused Hamiliton-Leslie of betraying his people in exchange for favors from the English. He served as representative peer until 1722. In 1714, George I appointed Hamilton-Leslie as Vice Admiral of Scotland.

In the Jacobite rising of 1715, Hamilton-Leslie fought for George I in Scotland against the pretender James Francis Edward Stuart. In a skirmish at Kinross, Hamilton-Leslie led a troop of the Scots Greys that defeated the Jacobites and took Sir Thomas Bruce captive. At the Battle of Sheriffmuir, he led a group of volunteer fighters. Hamilton-Leslie raised a militia group in Fife that he led against the forces of Rob Roy MacGregor in Falkland, Fife. Hamilton-Leslie turned his own house into a garrison.

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