(1599-1662) Historical writer, son of Baillie of Jerviston, educated at Glasgow, he entered the Church of Scotland and became minister of Kilwinning in Ayrshire. His abilities soon made him a leading man. He was a member of the historic Assembly of 1638, when Presbyterianism was re-established in Scotland, and also of the Westminster Assembly, 1643. In 1651 he was made Professor of Divinity in Glasgow, and 10 years later Principal. His Letters and Journals, edited for the Bannatyne Club by D. Laing (q.v.), are of the greatest value for the interesting light they throw on a period of great importance in Scottish history. He was one of the wisest and most temperate churchmen of his time.