John Clerk (later Clerk-Maxwell) of Middlebie[1] FRSE (1790-1856) was a Scottish advocate. He bought the Glenlair estate in the parish of Parton, Kirkcudbrightshire, and built its estate house.[2]
He was the brother of Sir George Clerk of Penicuik, brother-in-law of James Wedderburn, and father of the mathematical physicist James Clerk-Maxwell.