Fairlie was born in Edinburgh around 1588, the son of an "honest burgess". He studied at the University of Edinburgh, gaining an MA in 1607 at the age of 19. He then served as a "regent" of the University.[1]
In 1625, he was appointed minister of South Leith Parish Church in the harbour area of Edinburgh. In 1629 he was appointed Professor of Divinity at the University of Edinburgh. In November 1630, he replaced John Duncanson as "second charge" to Old Greyfriars alongside Rev Andrew Ramsay in "first charge".[2]
He resigned in July 1637, having been elected Bishop of Argyll in place of Bishop Boyd but was deposed from this position by the General Assembly of the Church of Scotland in 1638. After a troubled period trying to find a new position, including failing to become minister of Largo, in March 1644 he eventually received a post as minister of Lasswade near Edinburgh under patronage of the King.[3]