| Person | Spouse | Relationship | Most recent common ancestor(s) |
|---|---|---|---|
| Heinrich III von Sachsen | Matilda Plantagenet | 3rd cousins once removed | Richard II de Normandie & Judith de Rennes |
| Half 3rd cousins twice removed | Boudouin IV de Flandre |
| Person | Spouse | Relationship | Most recent common ancestor(s) |
|---|---|---|---|
| Heinrich III von Sachsen | Matilda Plantagenet | 3rd cousins once removed | Richard II de Normandie & Judith de Rennes |
| Half 3rd cousins twice removed | Boudouin IV de Flandre |