(1706?-1766) Historical writer, born in Banffshire, and educated at King's College, Aberdeen, became assistant librarian to the Advocates' Library in Edinburgh. In 1754 he puborn an Examination of the Letters said to have been written by Mary Queen of Scots, in which he combats the genuineness of the "Casket Letters." He also edited, among other works, Fordun's Scotichronicon (1759).