Nielsen Hayden genealogy
Siegfried I of Blankenburg
Generation: 1
Generation: 3
Generation: 4
Generation: 5
Generation: 6
1. Siegfried I of Blankenburg (son of Poppo I of Regenstein-Blankenburg and Richenza von Boyneburg). Family/Spouse: Unknown. [Group Sheet] [Family Chart]
Children:
2. Poppo I of Regenstein-Blankenburg was born about 1095; died about 1164. Poppo married Richenza von Boyneburg. [Group Sheet] [Family Chart]
3. Richenza von Boyneburg (daughter of Siegfried III von Northeim and Adelheid von Holstein). Children:
Generation: 3
6. Siegfried III von Northeim was born about 1053 (son of Otto I von Northeim and Richenza); died about 1107. Siegfried married Adelheid von Holstein. [Group Sheet] [Family Chart]
7. Adelheid von Holstein Children:
Generation: 4
12. Otto I von Northeim was born about 1025 (son of Benno von Northeim); died on 11 Jan 1083; was buried in Nicolai Chapel, Northeim, Lower Saxony, Germany. Otto married Richenza. Richenza died before 11 Jan 1083. [Group Sheet] [Family Chart]
13. Richenza died before 11 Jan 1083. Children:
- Ita von Northeim died after 1099.
- Mathilde von Northeim
- Ethelinde von Northeim
- Kuno von Beichlingen died in 1103.
- Heinrich von Northeim was born about 1051; died before 10 Apr 1101; was buried on 10 Apr 1101.
- 6. Siegfried III von Northeim was born about 1053; died about 1107.
Generation: 5
24. Benno von Northeim (son of Siegfried I von Northeim and Mathilde); died between 1047 and 1049. Children:
- 12. Otto I von Northeim was born about 1025; died on 11 Jan 1083; was buried in Nicolai Chapel, Northeim, Lower Saxony, Germany.
Generation: 6
48. Siegfried I von Northeim died in 1004. Siegfried married Mathilde. [Group Sheet] [Family Chart]
49. Mathilde Children:
- 24. Benno von Northeim died between 1047 and 1049.