| Father | Samuel Cogswell (1709 - 1779) |
| Mother | Lydia Starkweather (1711 - ) |
| Sibling | Lydia Cogswell (1730 - 1801) |
| Sibling | Elizabeth Cogswell (1732 - ) |
| Sibling | Mary Cogswell (1733 - ) |
| Sibling | Edward Cogswell (1735 - 1808) |
| Sibling | Ann Cogswell (1736 - ) |
| Sibling | John Cogswell (1738 - 1832) |
| Sibling | Asa Cogswell (1740 - 1808) |
| Sibling | Hannah Cogswell (1742 - ) |
| Sibling | Samuel Cogswell (1743 - 1790) |
| Sibling | Elizabeth Coggswell (1745 - 1828) |
| Sibling | Joel Cogswell (1747 - ) |
| Sibling | Eunice Cogswell (1749 - 1819) |
| Sibling | Submit Cogswell (1752 - 1846) |