| Father | Sir John De Engaine II; 1st Lord Engaione; 1st Lord of Laxton (1302 - 1358) |
| Mother | Lady Joan Peverell Baroness of Engaine (1310 - 1358) |
| Sibling | Elizabeth Engaine (1341 - 1387) |
| Sibling | Katherine d'Engaine (1331 - 1410) |
| Sibling | John De Engaine (1333 - 1356) |
| Sibling | Thomas De Engaine (1335 - 1367) |
| Sibling | Lady Mary De Engaine (1335 - 1401) |
| Sibling | Joyce De Engaine (1336 - 1364) |
| Sibling | Joan De Engaine (1338 - 1395) |
| Sibling | Joyce Engaine (1340 - 1387) |
| Sibling | Lady Catherine Engaine (1340 - 1409) |
| Sibling | Lady Elizabeth De Engaine (1354 - 1387) |