Irving, Joseph. The Book of Dumbartonshire: A History of the County Burghs, Parishes, and Lands, Memoirs of... (Dumbartonshire,: W. and A. K. Johnston, 1879), Pages 178, 179.S1
III. William, second son of John, No. II. in our line. He was infeft in an annual rent of the lands of Dallebougart in Argyllshire, as heir of his father John, in October, 1541. He appears to have also obtained from his father some portion of the lands of Kirkton, his son being designated by that title. The elder branch of the family at that time was Over-Kirkton. William Smollett was repeatedly a bailie of Dumbarton. By his wife, Margaret Ireland, he left—S1