Crawfurd married Hon. Margaret Balfour (1606–), daughter of
Robert Balfour, Lord Balfour of
Burleigh and
Margaret Balfour,
suo jure Lady Balfour of Burleigh, a title in the
Peerage of Scotland. She died in ; they had no issue. After her death, he married Magdalen ( Carnegie) Baillie, Lady Baillie, the widow of
Sir Gideon Baillie, 1st Baronet of
Lochend, who died in 1640. She was daughter of David Carnegie,
styled Lord Carnegie (as son and heir apparent of
David Carnegie, 1st Earl of Southesk) and Lady Margaret Hamilton (a daughter of
Thomas Hamilton, 1st Earl of Haddington). After Lord Carnegie died in 1633, Magdalen's mother, Lady Margaret, married
James Johnstone, 1st Earl of Hartfell, thereafter becoming the Countess of Hartfell. Her sister, Margaret Carnegie, married
Gavin Dalzell, 2nd Earl of Carnwath. Together, they were the parents of: • Margaret Crawfurd (–1680), who married Hon.
Patrick Lindsay, son of
John Lindsay, 17th Earl of Crawford and Lady Margaret Hamilton (a daughter of the
2nd Marquess of Hamilton). Sir John died in 1661. On his death, as he had no male issue, the baronetcy became dormant. The representation of the family passed to Cornelius Craufurd of
Jordanhill, as heir-male; while his estate, including
Kilbirnie Castle, was settled on his youngest daughter, Margaret, according to his last will was dated 31 July 1662. His baronetcy remained dormant for over 100 hundred years, before being assumed in 1765 by a distant cousin, Sir Hew Crawfurd of
Jordanhill.
Descendants Through his daughter Margaret, he was a grandfather of John Crawford (great-grandfather of the
20th Earl of Crawford), Margaret Crawford (wife of
David Boyle, 1st Earl of Glasgow) and Magdalen Crawford (who married George
Dundas of Duddingstoun, and was great-grandmother of Gabriel Hamilton Dundas). ==References==