The will of Joanna Longley, "relict of Benjamin Crispe of Groton, formerly widow William Longley", mother of Elizabeth Longley who married James Blood, mentions granddaughter Elizabeth Shaddock. "This proves that Elizabeth, the wife of Samuel Shatuck, was the daughter of James Blood."
[No date is given or estimated, but an estimate of about 1695 may be arrived at based on the birth of first son Samuel, b. 7 Apr 1696, given in this source, and also found in Source:Groton, Middlesex, Massachusetts, United States. Vital Records of Groton, Massachusetts, to the End of the Year 1849, p. 218.]