Sie ist verheiratet mit Konrad von Werl.
Sie haben geheiratet
Kind(er):
MATHILDE von Northeim . The Annalista Saxo names "Heinricum Crassum comitem…Sifridum de Boumeneburh et Cononem comitem de Bichlinge et tres filias, terciam vero duxit Conradus comes de Arnesberge" as children of Otto von Northeim & his wife[1541]. The Annales Stadenses refers to the four daughters of Otto, specifying that "secunda mater fuit Frederici comitis de Arnesberch" without naming her[1542]. The primary source which confirms her name has not yet been identified. m KONRAD Graf von Werl-Arnsberg, son of BERNHARD Graf von Werl[-Arnsberg] & his wife --- (-killed in battle 19 Jul 1092).
Bronnen:
[1541] Annalista Saxo 1082.
[1542] Annales Stadenses 1105, MGH SS XVI, p. 318.
https://fmg.ac/Projects/MedLands/SAXON%20NOBILITY.htm#MathildeNortheimMKonradWerlArnsberg