Jan was born before 1302, the son of unknown parents. The place is not known.
His wife is not known. They were married, but the date and place have not been found. Their three known children were Richard (?-?), Willem (?-?) and Diederik (?-?).
| Event | Date | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|
| Birth | BEF 1302 |
|