Mary Graves Rice was born 18 January 1669 in Concord, Middlesex County, Massachusetts to Benjamin Graves (1645-1724) and Mary Hoar (1647-1697) and died 22 October 1736 Marlborough, Middlesex County, Massachusetts of unspecified causes. She married Benjamin Rice (1666-1749) 1 April 1691 in Marlborough, Middlesex County, Massachusetts.
Children
| Name | Birth | Death | Joined with |
| Ebenezer Rice (1692-) | |||
| Azariah Rice (1693-1779) | |||
| Lydia Rice (1695-1755) | |||
| Elizabeth Rice (1697-1723) | |||
| Simon Rice (1699-) | 1699 Massachusetts | Grace Newton (1700-) | |
| Zerubbabel Rice (1702-1775) | |||
| Rachel Rice (1703-1782) | 2 November 1703 Marlborough, Middlesex County, Massachusetts | 1782 Marlborough, Middlesex County, Massachusetts | Abraham Howe (1699-1781) |
| Mathias Rice (1706-1764) | |||
| Priscilla Rice (1708-1792) | |||
| Damaris Rice (1711-1751) | |||
Siblings
| Name | Birth | Death | Joined with |
| Mary Graves (1669-1736) | 18 January 1669 Concord, Middlesex County, Massachusetts | 22 October 1736 Marlborough, Middlesex County, Massachusetts | Benjamin Rice (1666-1749) |
| Elizabeth Mehitable Graves (1671-1730) | |||
| Ruth Graves (1674-1755) | |||
| Benjamin Graves (1676-1752) | |||
| Joseph Graves (1679-1756) | |||
| Joanna Graves (1681-1766) | |||
| John Graves (1683-1766) | |||
| Rebecca Graves (1685-) | |||