A junior member of the above family; trained for the bar; rose to be Lord Advocate for Scotland and M.P. for the county of Edinburgh; opposed at first to Pitt, he became at last his ablest coadjutor in Parliament, and did important services in connection with the military and naval defences of the country; his power was sovereign in Scotland; his statue, mounted on a lofty column, adorns one of the principal squares of the New Town of Edinburgh (1741-1811).