Benajah Pratt was born 1631 in Plymouth, Plymouth County, Massachusetts to Joshua Pratt (1593-1656) and Bathsheba Fay (1593-1673) and died 17 March 1682 Plymouth, Plymouth County, Massachusetts of unspecified causes. He married Persis Dunham (1635-1702) 29 November 1655 in Plymouth, Plymouth County, Massachusetts.
Children
| Name | Birth | Death | Joined with |
| Abigail Pratt (1657-) | |||
| John Pratt (1664-1731) | 21 November 1659 Plymouth, Plymouth County, Massachusetts | 12 March 1730 Salem, Essex County, Massachusetts | Margaret Kimball (1664-) |
| Benajah Pratt (1663-1730) | |||
| Joseph Pratt (1664-) | |||
| Joshua Pratt (1665-1713) | |||
| Bathsheba Pratt (1666-) | |||
| Mehitable Pratt (1667-1712) | |||
| Persis Pratt (1671-1743) | |||
| Hannah Pratt (1671-1723) | |||
| Ebenezer Pratt (1672-1760) | |||
Siblings