1Benjamin Tinkham Marshall, A Modern History of New London County, Connecticut, Vol. 2, p 159 (1922).
"(I) Walter Palmer came to Plymouth Colony in 1629, being on one of the ships that came over in the command of John Endicott. He was sworn a freeman of the Massachusetts Colony in May 1631; he was one of the founders of Charlestown, Massachusetts; he removed in 1642 to Rehoboth, Plymouth Colony. There he purchased large tracts of land, and filled various town offices. He was next recorded in Connecticut purchasing land of Governor Haynes, in 1655. He had 1,191 acres of land--this land situated on the shores of Wequetequock Cove, town of Stonington. He was born in England as early as 1585, died November 10, 1661, and is buried in what is known as the old Wequetequock burial place. He married (first) in England, long before he came to America. He married (second), June 1, 1663(sic), Rebecca Short and they were the parents of Deacon Gershom Palmer, the ancestor of this branch."
His marriage to Rebecca is probably 1633, as all his children were born before that date.