Educated at Heversham Grammar School , he was admitted a sizar at Trinity College , Cambridge in 1749 , aged 19 , and graduated B.A. in 1753 , M.A. in 1756 .
He was son of John Preston of Hincaster , Westmorland , by his third wife Ann .
Educated at Heversham Grammar School , son was admitted a sizar at Trinity College , Cambridge in 1749 , aged 19 , and graduated B.A. in 1753 , M.A. in 1756 .
He was son of John Preston of Hincaster , Westmorland , by his third wife Ann .