SOURCES: Donna Valley Russell, C.G., Gray Haven at Airview, 709 E. Main St., Middletown, MD 21769, "Ralph Hill of Plymouth and Billerica, Middlesex, MA, Descendants to the Fifth Generation"; National Genealogical Society Quarterly, Volume 72, Number 1, March 1984; received from Jan Saunders, e-mail jsaunders1@comcast.net. Billerica Vital Records to 1850, p. 101; Cambridge Vital Records to 1850, p. 369; Concord registers, Book 2.