About Mary Dorris
"My father's mother was a Scotch Lady, Mary Griffin."
- John Irwin Dorris (b. 22 Oct 1773) on the eastern shores of Maryland
- Allen, Marguerite H.. A record of the ancestry and descendants of Henry & Sarah (Thompson) Hendricks of Monmouth Co., New Jersey : Henry Hendricks genealogy (1730-) : with notes on related families including Dorris, Frost, Parsell, Hinton, Schenck, Couwenhoven, Van Pelt and Wyckoff. unknown: Hendricks Family Organization, 1963. p 551 (see PDF document, attached).