| Father | James Griffith Davis Sir (1487 - 1531) |
| Mother | Lady Matilda Maud Verch Morgan Lloyd (1480 - 1530) |
| Sibling | Sir David Griffith Davys Davis (1500 - 1587) |
| Sibling | James Thomas Davis (1500 - 1590) |
| Sibling | John Davis (1506 - 1595) |
| Sibling | James Thomas Davis (1507 - 1559) |
| Sibling | Sir Robert John Davis (1507 - 1559) |
| Sibling | James Rice Davis (1509 - 1519) |
| Sibling | John Davies (1510 - 1579) |
| Sibling | Gage Lloyd Davis (1517 - ) |
| Sibling | Sage Verch Gruffudd Davis (1517 - ) |
| Sibling | John Davys (1520 - ) |
| Sibling | Sir James Thomas Rhys Griffith Davis (1520 - 1587) |
| Sibling | Sage Griffith Davis (1521 - 1554) |
| Sibling | James Thomas Evan Rice Davis (1530 - 1579) |
| Sibling | Sir James Rhys Davis (1530 - 1587) |
| Sibling | Gwenhyfer Verch Griffith Davis (1532 - ) |
| Sibling | Sir David Griffith (1534 - ) |