| Father | Richard TREAT (1584 - 1669) |
| Mother | Alice GAYLORD (1594 - 1614) |
| Sibling | Honor TREAT (1616 - ) |
| Sibling | Joanna TREAT (1618 - ) |
| Sibling | Sarah TREAT (1620 - 1673) |
| Sibling | Richard TREAT (1623 - ) |
| Sibling | Robert TREAT [GOVERNOR] (1624 - 1710) |
| Sibling | Elizabeth TREAT (1627 - 1706) |
| Sibling | Susannah TREAT (1629 - 1705) |
| Sibling | Catharine TREAT (1637 - ) |
| Sibling | Alice TREAT (1631 - 1633) |
| Sibling | James TREAT [Lt.] (1634 - 1709) |
| Sibling | Katharine TREAT (1637 - ) |
| Sibling | Thomas TREAT (1639 - ) |
| Sibling | Sarah TREAT (1664 - 1712) |
| Sibling | Governor Robert TREAT (1624 - 1710) |