John Gregory was born on 3 June 1724 in Aberdeen and died on 9 February 1773. He received his early education at King's College, Aberdeen (1736–40). He studied medicine at the Universities of Edinburgh (1741–5) and Leyden (1745–6) before returning to King's, from which he received an MD in 1746. He was a Regent (1746–9) and a Professor of Medicine (1755–66) at King's and then Professor of the Practice of Medicine at Edinburgh from 1766 until his death. He was a close friend and protégé of his cousin Thomas Reid and, with other members of the Aberdeen Philosophical Society, which they founded together, he played an important role in the development and popularization of Reid's common-sense philosophy. During his years in Edinburgh, he was a member of the city's most influential medical and philosophical societies and a close aquaintance of such prominent men of letters as David Hume, Lord Monboddo, Lord Kames and Hugh Blair.
From The Continuum Encyclopedia of British Philosophy in Oxford Reference.