Webster was born in Edinburgh some time in 1707, the year of the union of the Scottish and English parliaments. He died in Edinburgh on 25 January 1784. The son of a prominent Edinburgh minister, he was educated at the High School and the University of Edinburgh. He was licensed as a minister of the kirk at Haddington and ordained at Culross in 1733. Given his background and abilities, he was clearly destined for higher things, and by 1737 had been promoted to the Tolbooth Kirk, Edinburgh, one of the most important churches in city. He was awarded a DD by the University of Edinburgh in 1760.
From The Biographical Dictionary of British Economists in Oxford Reference.