Alexander Stewart, 4th Lord Blantyre

http://www.electricscotland.com/history/nation/blantyre.htm

On the death of William, second Lord Blantyre, 29th November 1638, he was succeeded by his eldest son, Walter, third lord, who married Margaret, daughter of Sir William Mure of Rowallan, but had no issue. He died in October 1641, when his brother, Alexander, became fourth Lord Blantyre. By his wife, Margaret, daughter of John Shaw of Greenock, he had a daughter, Helen, married to James Muirhead of Bredishohn, and a son, Alexander, who succeeded him as fifth lord.

http://wc.rootsweb.ancestry.com/cgi-bin/igm.cgi?op=GET&db=maclaren&...

Alexander Stewart, 4th Lord Blantyre was born after 1631. He was the son of William Stewart, 2nd Lord Blantyre and Helen Scott. He married Margaret Shaw, daughter of John Shaw and Helen Houston, circa September 1649. He died circa May 1676 at Bute, Scotland, probably from smallpox.

    He succeeded to the title of 4th Lord Blantyre [S., 1606] in October 1641. In 1647 he was one of the "Engagers" for King Charles I, but he escaped punishment due to his youth.1