| Father | Capt. Benedict ARNOLD III (1683 - 1761) |
| Mother | Hannah Lathrop WATERMAN KING ARNOLD (1708 - 1759) |
| Sibling | Hannah ARNOLD (1724 - 1729) |
| Sibling | Joseph ARNOLD (1725 - 1814) |
| Sibling | Hannah KING (1731 - 1739) |
| Sibling | Fenner ARNOLD (1738 - 1836) |
| Sibling | Benedict ARNOLD (1738 - 1739) |
| Sibling | Maj Gen Benedict ARNOLD V (1741 - 1801) |
| Sibling | Eunice ARNOLD ( - ) |
| Sibling | Hannah ARNOLD (1742 - 1803) |
| Sibling | Mary ARNOLD (1745 - 1753) |
| Sibling | Absalom King ARNOLD (1747 - 1750) |
| Sibling | Elizabeth ARNOLD (1749 - 1753) |
| Sibling | Mary ARNOLD (CLEVELAND) (1753 - 1790) |