Jan was born about 1391, the son of Jan II van Loon-Heinsberg and Margareta van Gennep. The place is not known.
He died before 1441. The place is not known.
His wife was Walburga von Mörs. They were married, but the date and place have not been found. Their two known children were Jan IV (?-1448) and Margarete (1426-1446).
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Jan III van Loon-Heinsberg |
Jan II van Loon-Heinsberg |
Godfried II van Loon-Heinsberg |
Jan I van Loon-Heinsberg |
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Katharina von Voorne-Seeland |
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Filippa van Gulik |
Willem van Gulik |
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Johanna van Holland |
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Margareta van Gennep |
Johan II van Gennep |
Johan I van Gennep |
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Johanna Both van der Eem |
Gijsbrecht III Both van der Eem |
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Margaretha van Arkel |
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| Event | Date | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|
| Birth | ABT 1391 |
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| Death | BEF 1441 |
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| Attribute | Date | Description | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|---|
| Nobility Title | FROM 1438 TO 1443 | herr zu Heinsberg en Loewenberg |