Gertrude's brother, Ordulf Billung (character 1416), is properly married to Ulfhild Olofssdottir (character 102528), but she is not listed as the mother of either of his children in the scenario: Magnus, Duke of Saxony (character 1418) has no mother (or, rather, his mother is id 45, which is not defined in the characters.inc), and Bernhard (character 1419) has as his mother Gertrud von Haldensleben (character 1445) who according to the Duke of Saxony's research Ordulf didn't marry until 1071, after the death of Ulfhild. I'm not sure that Bernhard belongs in the family group at all, since only one Worldconnect tree lists him. Just checked the German site that the Duke of Saxony uses, and it has Bernhard's birth in 1071, so he should probably be deleted.