There is a Thayer Families Association and their respected historian, Patricia Thayer Muno. Patricia has compiled many books, the first one included an incorrect conclusion that there were only two Thayer brothers who originally immigrated from Thornbury, England to the US, and that the Nathaniel Thayer who married Abigail Harvey, was the son of Richard Thayer.
Patricia has since discovered the following information that shows that the Nathaniel Thayer who married Abigail Stone, was actually the son of a third, heretofore unknown brother, William and his wife, Mary Kelloway. Please see her substantiation below:
"For our cousins who still think they descend from the Immigrant, NATHANIEL THAYER: Congratulations! You now have Nathaniel's father, William Thayer, baptized 5 May 1605 in the St. Mary the Virgin Church in Thornbury, Gloucestershire, England also as your immigrant ancestor!
Here is the source for this 2003 finding:
A History of the Doggett/Daggett Family 1894,
compiled by Samuel Bradlee Doggett, copyright 1894, page 75.
From this source, we read the following:
"John Doggett settled 1st in Watertown in 1630. He removed to Rehoboth in about 1646. The 9th of the 12th mo., 1646, at a meeting of the townsmen, .....
The same day, it was agreed that Edward Sale, John Doggett, William Sabin, John Peram, and WILLIAM THAYER shall have leave to set up a "weier" upon the cove before William Devill's house, and one upon Pawtucket river."
This William Thayer could have been none other than the father of Nathaniel Thayer who settled in Taunton, Bristol, MA. It is highly likely that he may also have been the father of Benjamin TAYER family of RI.
With William's last child born in England in 1644 and the above information, it is estimated that William, and at least his son Nathaniel, immigrated to America in about 1645.
The following children of William THAYER and Mary KELLAWAY, most of whom were known to have died in infancy or early childhood:
i. Jonathan (1626-1626)
ii. Marie (1627-1627)
iii. Jonathan (1628/28 - 1628/29)
iv. John (1631-1631)
v. Marie (1632- death unknown)
vi. Elizabeth (1635- death unknown)
vii. Jonathan 1637-1642/43)
viii. Nathaniel (10 May 1640 Thornbury - about 1725 of Taunton, Bristol, MA - Immigrated to America, most likely with his father before 1645).
ix. Gabriel (22 Apr 1644 Thornbury - death unknown)."