Jan was born about 1318, the son of unknown parents. The place is not known.
He died on 26 SEP 1345 in Slag bij Warns.
His wife was Maria van Polanen. They were married, but the date and place have not been found. They had no known children.
| Event | Date | Details | Source | Multimedia | Notes | ||
|---|---|---|---|---|---|---|---|
| Birth | ABT 1318 |
|
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| Death | 26 SEP 1345 |
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| Attribute | Date | Description | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|---|
| Nobility Title | burggraaf van Montfoort | |||||
| Nobility Title | heer van Heeswijk, Achthoven en Wiliskop |
Note 1
zoon van Zweder I van Montfoort en Catharina van Holland.