Individual Details
Sybil de Yorkshire
(970 - )
Events
| Birth | 970 | Calvados, Basse-Normandie, France | |||
| Death |
Families
| Spouse | Adam D'PORT (970 - 1030) |
| Father | Grono AP TEWDWR TREVOR (930 - ) |
| Mother | Tanglwyst ferch DINAWAL (930 - ) |
| Sibling | Rhiengar Gwen FERCH GRONO of Denbighshire (964 - 1058) |
| Sibling | Thomas ap GRONWY ( - ) |