Brudvik – en slekt fra Ytre Arna og Hedmark Etterkommerne etterOtto The Rich of Ballenstedt
  1. Otto The Rich of Ballenstedt, 1070–1123
  2. Eilika of Saxony, 1080–1142
  3. Adelheid of Ballenstedt, 1095–1139
  4. Albert I The Bear of Brandenburg, 1100–1170
  5. Sophie of Winzenburg, 1105–1160