| Person | Spouse | Relationship | Most recent common ancestor(s) |
|---|---|---|---|
| Geoffroy II Plantagenêt | Constance de Penthièvre | Half 2nd cousins once removed | Henry I of Normandy |
| Person | Spouse | Relationship | Most recent common ancestor(s) |
|---|---|---|---|
| Geoffroy II Plantagenêt | Constance de Penthièvre | Half 2nd cousins once removed | Henry I of Normandy |