the personal name "gillanders" is an anglicised form of a gaelic name meaning "the servant of (st) andrew". the gaelic name was a common one in mediaeval scotland. according to grant, there are two men who appear in contemporary records in the 13th century, that may belong to the clan. these men are gillanders macisaac, and isaac macgillanders, who are thought to be father and son. according to grant, since gillanders macisaac flourished in about 1231, this could make him a contemporary of the "gillanders" recorded in the manuscript, and possibly could mean they are the same individual. grant suggested that the lands of gillanders macisaac may have been on the black isle, or lower strathconon, or around dingwall.