Alexander Moncrieff was born and died in Abernethy, Perthshire. A Presbyterian clergyman, he was suspended by the Church of Scotland following the Marrow controversy (see James Hog) and, with Ebenezer Erskine, helped found the Secession Church of Scotland in 1733. He published a number of pamphlets and sermons. Most notable were An Enquiry into the Principle, Rule, and End of Moral Actions, written against Archibald Campbell, and a later attack on Whitefield's Scottish supporters.
From The Continuum Encyclopedia of British Philosophy in Oxford Reference.