It was said by the author Douglas: "He became one of the greatest men of the kingdom for knowledge, learning, virtue and merit. He had few equals, and was excelled by none. He was Archbishop of St. Andrews, Lord High Chancellor of Scotland, etc., and in every station in life acquitted himself with dexterity, fidelity and honor, and as the life and transactions of this truly great man are fully recorded in his 'History of the Church of Scotland,' and briefly by Mr. Crawford in his 'Lives of the Officers of the State,' to these we refer the reader."
John married Rachel Lindsay, daughter of Rev. David Lindsay Bishop of Ross and Unknown. (Rachel Lindsay was born about 1568.)