Colonel The Lord John Kerr
He was the third son of Robert, 4th Earl of Lothian and 3rd Earl of Ancram, and his commission as Colonel of the Regiment was signed by King William III, retroactively, on 8th September 1716. Nothing is known of his earlier military service, but it is not unlikely that he was involved in the suppression of the Scottish clans (1689-1692) and the conquest of Ireland (1689-1690). He may later have served in the continental campaigns fought during the reign of Queen Anne, but no details have been traced. He died on 1st August 1728 while still in command.