My wife's ancestry comes through Edward's daughter Rebecca, so her tie in to the Bangs goes back aways. Anyway, below is the info I have on the family. Hope it helps and perhaps consistent with the info you have.
Edward Bangs was born in Chichester, England in 1592, arrived at Plymouth in the ship Ann in July 1623. He was a shipwright and tradition in the family reports that he superintended the construction of the first ship built in Plymouth, afterward licensed as a merchant. He removed with Gov. Prince (Prence) and others to Eastham in 1644 and there died in 1678 at age 86 (Geneological Register of the first settlers of New England by John Farmer and Directory of the ancestreal heads of New England Families 1620-1700 by Frank R. Holmes).
Was a representative in 1647 and several other years and in his will dated October 19 1677 and probated March 5, 1678, evidence is furnished that all his children except Rebecca who married Jonathan Sparrow on October 16, 1654 and left children. (Geneological Dictionary of New England by Savage)
Arriving at Plymouth in 1623 on the Anne, Edward Bangs was probably born about 1591, for he said he was aged 86 in 1677. There is evidence to show that he was probably identical to the Edward Bangs who was baptized on October 28, 1591 in Panfield, Essex, England, the son of John and Jane (Clavis) Bangs. He married (1) after 1627 Lydia Hicks, daughter of Robert and Margaret Hicks (she may have been the second wife, since he may have had an earlier on, and (2) Rebecca (?Hobart). He was one of the Purchasers, and he was on the 1632/33 freeman list. He was on of those chosen to lay out the twenty acre lots in the 1627 division, along with William Bradford, Edward Winslow, John Howland, Francis Cooke, and Joshua Pratt. With Miles Standish and others, Edward Bangs was chosen in 1633 to divide the meadow in the bay equally. He was also chosen on committees to asses the entire colony for public costs and he served on various juries and other public serrvice committees. He appears to be a man who was responsible and trusted. In a record where he was surety for another, he was called a yoeman. In 1641, he was granted 80 acres of land at Warren's Wells, and in 1642 he was allowed to exchange some of it for land closer to his house. He removed to Nauset with the Prence group, and in 1647 he was a supervisor of the highways there.
In 1652, he became a deputy for Eastham and in 1657 was licensed to sell wine and strong waters at Eastham "provided it bee for the refreshement of the English and not bee sold to the Indians". In a deed of 22 June 1651, he was joined as grantor by his wife Rebecca. He made his will on Oct 16, 1677 calling himself 86, and he maned his sons: Jonathan, John, Joshua, his daughter Howe, daughter Higgens, daughter Hall, daughter Merrick, and daughter Atwood; the children of his daughter Rebecca, deceased; and his son Jonathan's oldest son Edward. In an agreement of March 6, 1677/78, Jonathan Bangs agreed that the land bequeathed to his son Edward could be used by Jonathan's brother John until Edward came of age. The children from his marriage to Lydia Hicks are John, who married Hannah Smalley, and from his marriage to Rebecca (possibly Hobart), Rebecca, who married Jonathan Sparrow, etc. (Plymouth Colony Biographical Sketches)
Bangs - a corruption of Banks or from the French bain - bath, hot-house. William de Banc was living at Cambridge, England in 1130. (Directory of the ancestreal heads of New England Families 1620-1700 by Frank R. Holmes)