James Geddes was born in 1710, the son of James Geddes, laird of Kirkurd, in Tweeddale, and he died of consumption, probably at his estate of Rachan, at Broughton, Peeblesshire on 15 July 1745. He was initially educated at home by William Leechman, later Professor of Divinity and Principal of Glasgow University, who gave him his grounding in classical languages and literature. They remained friends, and when Geddes was already gravely ill in 1744 Leechman accompanied him to London. Geddes attended some of the philosophy classes at the University of Edinburgh, but never matriculated; he can be traced in the mathematics class of Colin MacLaurin in the session 1727 to 1728, when he subscribed to the library, and in 1728 he attended Charles Mackie's classes on Universal History and on Greek and Roman Antiquities, the latter intended for students of Scots law. Geddes became an advocate and remained in correspondence with Mackie. He married Helen Somervel of Innerkeil, Fife in 1738.
From The Continuum Encyclopedia of British Philosophy in Oxford Reference.