Nielsen Hayden genealogy
Ancestors of Otto I von Northeim
Abt 1025 - 1083 (~ 58 years) ┌── Siegfried I von Northeim ( - 1004)
┌── Benno von Northeim ( - Between 1047 and 1049)
│ └── Mathilde
│
Otto I von Northeim (Abt 1025 - 11 Jan 1083 bur.Nicolai Chapel, Northeim, Lower Saxony, Germany)