Nielsen Hayden genealogy
Ancestors of Siegfried I of Blankenburg
![Male](img/tng_male.gif)
┌── Poppo I of Regenstein-Blankenburg
(Abt 1095 - Abt 1164)
![Locate Person in Chart, Link to Ancestor Chart & Descendant Chart](img/rrtextplus_locate.gif)
│ ┌── Siegfried I von Northeim
( - 1004)
![Locate Person in Chart, Link to Ancestor Chart & Descendant Chart](img/rrtextplus_locate.gif)
│ ┌── Benno von Northeim
( - Between 1047 and 1049)
![Locate Person in Chart, Link to Ancestor Chart & Descendant Chart](img/rrtextplus_locate.gif)
│ │ └── Mathilde
![Locate Person in Chart, Link to Ancestor Chart & Descendant Chart](img/rrtextplus_locate.gif)
│ │
│ ┌── Otto I von Northeim
(Abt 1025 -
│ │ 11 Jan 1083 bur.Nicolai Chapel, Northeim, Lower Saxony, Germany)
![Locate Person in Chart, Link to Ancestor Chart & Descendant Chart](img/rrtextplus_locate.gif)
│ │ 11 Jan 1083 bur.Nicolai Chapel, Northeim, Lower Saxony, Germany)
│ ┌── Siegfried III von Northeim
(Abt 1053 - Abt 1107)
![Locate Person in Chart, Link to Ancestor Chart & Descendant Chart](img/rrtextplus_locate.gif)
│ │ └── Richenza
( - Bef 11 Jan 1083)
![Locate Person in Chart, Link to Ancestor Chart & Descendant Chart](img/rrtextplus_locate.gif)
│ │