Johann was the son of unknown parents. The date and place of his birth have not been found.
He died before 1270. The place is not known.
His wife is not known. They were married, but the date and place have not been found. Their only known child was Heinrich I (?->1280).
| Event | Date | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|
| Death | BEF 1270 |
|