John Bradley was born 15 June 1614 in Ahton-upon-Lyne, Lancashire, England, United Kingdom to John Bradley (1578-1642) and Katherine Bexwicke (1574-1643) and died 1 June 1642 Dorchester, Suffolk County, Massachusetts, United States of unspecified causes. He married Katherine Bostocke (1610-1663) 9 February 1629 in St. Michael Macclesfield, Cheshire, England, United Kingdom.
Children
| Name | Birth | Death | Joined with |
| Nathan Bradley (1631-1701) | 1631 Dorchester, Suffolk County, Massachusetts, United States | 26 July 1701 Dorchester, Suffolk County, Massachusetts, United States | Mary Evans (1640-1711) |
| Salathiel Bradley (1641-1641) | |||
Siblings
| Name | Birth | Death | Joined with |
| Susan Bradley (1610-) | |||
| John Bradley (1614-c.1600) | 15 June 1614 Ashton-upon-Lunel, Lancashire, England, United Kingdom | 1660 Dorchester, Suffolk County, Massachusetts, United States | Katherine Bostocke (1610-1663) |
| Sara Bradley (1621-) | |||
| Elizabeth Bradley (1617-1697) | |||