Dorothy Heydon was born on an unknown date to Henry Heydon (-1504) and Anne Boleyn (-1510) .
Children
| Name | Birth | Death | Joined with |
| Elizabeth Brooke (c1503-aft1550) | 1503 England | 1550 England | Thomas Wyatt (c1503-1542) Edward Warner (1511-1565) |
| George Brooke, 9th Baron Cobham (c1497-1558) | 1497 | 29 September 1558 | Anne Bray (1501-1558) |
| Margaret Brooke | |||
| Thomas Brooke (?-1547) | |||
| William Brooke | |||
| John Brooke | |||
| Fayth Brooke | |||
| Philippa Brooke | |||
Siblings
| Name | Birth | Death | Joined with |
| John Heydon | |||
| Henry Heydon | |||
| William Heydon | |||
| Dorothy Heydon (-bef1529) | Thomas Brooke, 8th Baron Cobham (c1465-1529) | ||
| Bridget Heydon | |||
| Anne Heydon (-c1521) | |||
| Elizabeth Heydon | |||
| Amy Heydon | |||