Mary Farr Farnsworth was born 1636 in Lynn, Essex County, Massachusetts to George Farr (1594-1662) and Elizabeth Stower (1611-1672) and died 1717 Lunenburg, Worcester County, Massachusetts of unspecified causes. She married Matthias Farnsworth (1612-1689) 1656 in Lynn, Essex County, Massachusetts.
Children
| Name | Birth | Death | Joined with |
| Joseph Farnsworth (1657-1674) | |||
| Mary Farnsworth (1660-1725) | |||
| Sarah Farnsworth (1663-1731) | |||
| Benjamin Farnsworth (1667-1733) | |||
| Samuel Farnsworth (1669-1727) | |||
| Abigail Farnsworth (1671-) | |||
| Jonathan Farnsworth (1675-1748) | 1 June 1675 Groton, Middlesex County, Massachusetts | 16 August 1748 Harvard, Middlesex County, Massachusetts | Ruth Shattuck (1668-1733) |
Siblings