NOTES: See "Doubts About the Finley Line." My brother Josh points out there is no substantial evidence disputing the Finley family's own recognition of James McGrew as the husband of Mary Finley (i.e., it is not the conventional situation of the less established line claiming a dubious but convenient kinship), so this site will resolve the issue that way unless and until more solid evidence calls that into question.
Information is from "Clan Finley." His parentage is unknown, but his wife is the daughter of the Marquise of Montrose.