Joannis was born about 1750, the son of unknown parents. The place is not known.
His wife was Maria Johannetta Werth, who he married in ABT 1770. The place has not been found. Their only known child was Maria Johannetta (c1777-?).
| Event | Date | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|
| Birth | ABT 1750 |