Phineas Brigham, Jr. was born 31 December 1787 in Southborough, Worcester County, Massachusetts to Phineas Brigham (1757-1813) and Susanna Howe (1764-1813) and died 17 September 1852 Madison, Madison County, New York of unspecified causes. He married Susan Ames (1791-1852) 18 February 1809 in Buckland, Franklin County, Massachusetts.
Children
| Name | Birth | Death | Joined with |
| Lucy Brigham (1810-1855) | |||
| Lucius Brigham (1812-1881) | |||
| Mary Brigham (1814-1830) | |||
| Horace Ames Brigham (1814-1904) | 14 October 1814 Leicester, Livingston County, New York, United States | 16 March 1904 | Julia Perry (1818-1870) |
| Emily Brigham (1819-1904) | |||
| George H. Brigham (1823-1910) | |||
| Edwin Pierson Brigham (1828-) | |||
Siblings
| Name | Birth | Death | Joined with |
| Phineas Brigham (1784-1847) | 31 December 1787 Southborough, Worcester County, Massachusetts | 17 September 1852 Madison, Madison County, New York | Susan Ames (1791-1852) |
| Timothy Brigham (1786-1829) | |||
| Susanna Brigham (1787-1809) | |||
| Sophia Brigham (1792-) | |||
| Louisa Brigham (1794-1796) | |||
| Louisa Brigham (1797-1857) | |||
| George Howe Brigham (1799-1881) | |||
| Fitch Brigham (1803-1844) | |||
| Salmon Brigham (1805-1890) | |||