About Robert, Master of Sutherland
http://www.archive.org/stream/heraldryofmurray00john#page/4/mode/2up Page 5 (No. 19-b)
Robert, according to Sir Robert Gordon, married the younger daughter and co-heiress of James Dunbar of Frendraught, and had a son John, who died without issue. This statement has not been verified, and Sir Robert's pedigree of the Dunbar family is erroneous. It may be noted, however, that Janet Dunbar, the eldest co-heiress, who married James Crichton, married as her second husband before 1458 a John Sutherland, who may have been the son of Robert, but they had no issue. Robert Sutherland was, according to the family historian, still alive in 1487, when he is said to have led a company of Sutherland men against the Rosses at the battle of Aldycharrish; but if so, he must have been a very old man, and it may be doubted if it were not another person of the same name.
 Genealogy, pp. 74, 78, 79.