It is said that he and his first wife were married for 52 years before she died. He had 12 known children.
Banfield married second to a Miss or Mrs. Blackington (d 10 May 1735), and third to Mrs. Sarah (Pease) Daggett, widow of Deacon John Daggett of Attleboro, MA.
Source for the above notes: "Genealogy of the Descendants of Banfield Capron, from A.D. 1660 to A.D. 1859" by Frederic A. Holden. (Google books)
Some genealogies have the first and second wife as the same individual, named Elizabeth.