| Father | Sir Robert Dennis MP (1530 - 1592) |
| Mother | Margaret Elizabeth De Godolphin (1546 - 1592) |
| Sibling | Jane Annette Knopp (1556 - 1618) |
| Sibling | Phillippa Dennis (1561 - 1655) |
| Sibling | Margaret Dennis (1565 - 1595) |
| Sibling | Margaret Dennis (1566 - 1630) |
| Sibling | Thomas Dennis MP (1568 - 1613) |
| Sibling | Arthur Dennis (1570 - ) |
| Sibling | Margaret Dennis (1572 - ) |
| Sibling | Elizabeth Dennis ( - 1635) |
| Sibling | Jane Dennis (1578 - 1599) |
| Sibling | Mary Dennis (1580 - ) |
| Sibling | James Dennis (1582 - 1592) |
| Sibling | Mary Margaret Dennis (1585 - 1640) |
