I, Duke) von NORTHEIM (Count OTTO

I, Duke) von NORTHEIM (Count's father was BENNO (Bernard) (Count) von NORTHEIM and his mother was EILIKA von STADE.  His paternal grandparents were SIEGFRIED COUNT von NORTHEIM and UNKNOWN MATILDA.  He was an only child.¹ 

‌I, Duke) von NORTHEIM (Count and RICHENZA were married in a religious ceremony after 1050.¹   They had a son named HENRY COUNT.