Mathilde von Northeim

Parents

• Richenza of Swabia
• Otto of Nordheim

Children

• Frederick of Werl-Arnsberg
• Henry of Arnsberg

Siblings

• Henry, Margrave of Frisia
• Kuno, Count of Beichlingen
• Oda von Werl
• Siegfried III, Count of Boyneburg
• Ethelinde of Northeim
• Ida von Nordheim