| Willa von Tuscien was daughter of Bosso von Tuscien and Willa von Hochburgund. |
| Bosso von Tuscien's father was Theobald von Arles married to Bertha von Lothringen, daughter of Lothar II. von Lothringen, one son of Lothar I. von Lothringen. |
| Lothar I. von Lothringen was son of Ludwig den Fromme, Koenig von Franken, son of Karl den Grossen, Koenig von Franken and Hildegard von Alemannen. |
| Arnulf II. von Flandern's son, Baldwin IV. von Flandern was married to Otgiva von Luxemburg, daughter of Friedrich I. von Luxemburg. Their daughter was: |
| Agnes von Flandern married to Welf IV. von Bayern. Their son was: |
| Heinrich der Schwarze von Bayern, followed by: |
| Heinrich der Stolze von Bayern and |
| Heinrich der Loewe von Bayern was married to Mathilda von England, daughter of Heinrich II. von England. |
| Heinrich II. von England was son of Gotfried von Anjou, son of Fulk V. von Anjou . |