Frederick Josiah Bradlee I was born 1866 in Boston, Suffolk County, Massachusetts, United States to Josiah Bradlee III (1837-1902) and Alice Crowninshield (1839-1926) and died 1951 Arlington, Middlesex County, Massachusetts, United States of unspecified causes. He married Elizabeth Whitwell Thomas (1868-1952) 13 February 1951 in Boston, Suffolk County, Massachusetts, United States.
He was a director of the National Boston Bank.
Siblings
| Name | Birth | Death | Joined with |
| Sarah Crowninshield Bradlee (1865-) | |||
| Frederick Josiah Bradlee I (1866-1951) | 1866 Boston, Suffolk County, Massachusetts, United States | 1951 Arlington, Middlesex County, Massachusetts, United States | Elizabeth Whitwell Thomas (1868-1952) |
| James Bowdoin Bradlee (1873-1962) | |||
| Francis Boardman Crowninshield Bradlee (1881-1928) | |||
Children
| Name | Birth | Death | Joined with |
| Frederick Josiah Bradlee, Jr. (1892-1970) | 20 December 1892 Boston, Suffolk County, Massachusetts, United States | 28 April 1970 Beverly, Essex County, Massachusetts, United States | Josephine de Gersdorff (1896-1975) |
| Theodore Chase (1895-1896) | |||
| Sargent Bradlee (1898-1987) | 15 September 1898 Boston, Suffolk County, Massachusetts, United States | 11 July 1987 Beverly, Essex County, Massachusetts, United States | Louise Trippe |
| Malcolm Bradlee (1900-1960) | |||