Hij had een relatie met Catherine Fyffe.
Chamberlain to John Drummond, 2nd Earl of Perth. James McGruder was termed Laird of Cargill in Acts of Parliament, 1644. He married Catherine Fyffe, believed to be the daughter of William Fyffe of Dunkeld.
THE ANCESTRAL HISTORY OF MARGARET CAMPBELL OF KEITHICK (1571-c. 1631) by
Dr. Charles G. Kurz, Clan Librarian, based on the research and papers of former Chieftain, Thomas Garland Magruder, Jr.
Alexander Magruder's descendants are fortunate in having an outstanding authority on the Magruder family and their ancestry in Scotland. That acknowledged authority is our former Chieftain, Thomas Garland Magruder, Jr., of Williamsburg, Virginia