a Scottish soldier in the British Army and Member of Parliament. From 1784 to 1787 Wemyss was MP for Sutherland, succeeding his father, before sitting for Fife from 1787 to 1796 and again from 1807 to 1820.
Captain in the Army by brevet, 1 July 1783 DAG in Scotland and Major, 18 November 1786 DAG in Scotland and Lieutenant-Colonel, 1 October 1791 Colonel, 22 August 1795. He attained the rank of Major-General on 23 June 1798. Action near Ardee.
