Sarah Allen Copeland was born 15 April 1709 in Braintree, Norfolk County, Massachusetts, United States to Benjamin Allen (1679-1733) and Sarah Thompson (1679-1771) and died 20 March 1801 Norton, Bristol County, Massachusetts, United States of unspecified causes. She married Benjamin Copeland (1708-1790) 21 November 1734 in Braintree, Norfolk County, Massachusetts.
Children
| Name | Birth | Death | Joined with |
| Benjamin Copeland (1736-1749) | |||
| Sarah Copeland (1738-) | |||
| Susannah Copeland (1740-1816) | |||
| Elizabeth Copeland (1742-1808) | |||
| Eunice Copeland (1743-1832) | |||
| Moses Copeland (1745-1840) | |||
| William Copeland (1748-1840) | 20 March 1748 Norton, Bristol County, Massachusetts, United States | 24 March 1840 | Martha White (1754-1809) |
| Samuel Copeland (1750-1833) | |||
| Asa Copeland (1752-1829) | |||
| Lydia Copeland (1755-) | |||
Siblings