Johann was born about 1909, the son of Georg Dumont but his mother is unknown. 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 Volker Hans (c1934-?).
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| Event | Date | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|
| Birth | ABT 1909 |