 Malcolm's successor to the earldom of Wigtown, his grandson Thomas, had grave financial problems and was stripped of the rights of regality given to his grandfather.The recreation of the Lordship of Galloway for Archibald the Grim in 1369 posed some conceptual problems for the earldom, as it fell within the old territories of the lordship.Thomas found himself in grave financial difficulties and sold the earldom to Archibald in 1372.