BARRETT, Samuell, s. John, and Sarah Buttrik, d. Will[iam], of Concord, Feb. 21, 1683.
Barrett, Joseph Hartwell. "Thomas Barrett of Braintree, William Barrett of Cambridge", in The New England Historical and Genealogical Register. (Boston: New England Historic Genealogical Society) Vol. 42, p. 260.
This source doesn't help much with this family, listing only the birth for the first Samuel, for Sarah and for Elizabeth, and only providing any detail on William. It appears to completely miss the death record for Sarah and the birth of the second Samuel...