Johann was born about 1208 in Diepholz, the son of unknown parents.
He died about 1265. The place is not known.
His wife was Hedwig von Limmer-Wunstorf. They were married, but the date and place have not been found. Their only known child was Konrad V (VI) (1241-1301).
| Event | Date | Details | Source | Multimedia | Notes | ||
|---|---|---|---|---|---|---|---|
| Birth | ABT 1208 |
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| Death | ABT 1265 |
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