Uchter, the eldest son, married Janet, daughter of William, Lord Semple, by whom he had issue Uchter, his heir, William, progenitor to the Knox's of Silvyland; and two daughters, the elder of whom, Janet, married first Alexander Conyngham of the family of Craigends, and secondly, (John) Porterfield of Porterfield; and the second daughter married John Buntine of Ardoch, an ancient family yet existing in the shire of Dumbarton.