There was a William Adair of Killaisser (Castle ?), Parish of Stoneykirk, Wigtownshire, Scotland, & spouse, Jonnet Cathcart in the riot in Stoneykirk Church as noted in "The Register of the Privy Council of Scotland" Vol. VII AD1638-43. William (AD1635) of Killaisser may have been a descendant of James Adair of Corgie (who was elder brother of Rev. Archibald Adair), although I doubt as well that James of Corgie / Curghie would have been old enough to be minister of Stoneykirk in the time-frame you mentioned. We would have to back another generation. The Adair of Corgie lineage included marriages with the McDowells.