Hermann was born in BET 1075 AND 1080, the son of unknown parents. The place is not known.
He died about 1144. The place is not known.
His wife was Judith von Zütphen. They were married, but the date and place have not been found. They had no known children.
| Event | Date | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|
| Birth | BET 1075 AND 1080 |
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| Death | ABT 1144 |
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| Attribute | Date | Description | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|---|
| Nobility Title | gref von Ravensberg |
Note 1
Sohn des Grafen Hermann I. von Kalvelage und der Ethelinde von Northeim, Tochter von Graf Otto von Northeim