Hildegunde von Buxhoeveden - Are you sure her name was Hildegunde?

The father was also stated as N.N. I've only seen her mentioned in digitale sammlungen as N.N. married to Engerlbertus de Tisenhusen and sister of Albert the bishop.

Hildegunde Buxhövden is my 17th great grandmother.
You
→ Elza Dzelvite (Grahpe,Grāpe)
your mother → Jahn Grahpe
her father → Baron Arnold Julius von Vietinghoff-Riesch
his father → Juliane Charlotte Lulla von Vietinghoff
his mother → Helene Gertrude von Krüdener
her mother → Gustav Georg von Völckersahm
her father → Sophia Elisabeth von Mengden
his mother → ObtLt., Frhr Magnus Gustav von Mengden, von Altenwoga
her father → Gustav v. Mengden Frhr. v. Altenwoga
his father → Gertrud von Mengden Frfr. von Altenwoga
his mother → Jürgen von Rosen
her father → Kersten von Rosen
his father → Kersten III von Rosen auf Hochenrosen
his father → Jürgen l von Rosen
his father → N.N. von Tiesenhausen
his mother → Bartholomeus von Tiesenhausen, of Kokenhausen
her father → Johann von Tiesenhausen
his father → Hans von Tiesenhausen
his father → Hildegunde Buxhövden
his mother

Hildegunde Buxhövden is my 20th great grandmother.