Johann was born about 1895, the son of Jakob 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 Otto Ewald (c1920-?).
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| Event | Date | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|
| Birth | ABT 1895 |