Jan was the son of Jan III van Loon-Heinsberg and Walburga von Mörs. The date and place of his birth have not been found.
He died in 1448. The place is not known.
His wife was Johanna van Diest-Sichem. They were married, but the date and place have not been found. Their two known children were Johanna (1443-1469) and Elisabeth (?-1479).
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Jan IV van Loon-Heinsberg |
Jan III van Loon-Heinsberg |
Jan II van Loon-Heinsberg |
Godfried II van Loon-Heinsberg |
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Filippa van Gulik |
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Margareta van Gennep |
Johan II van Gennep |
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Johanna Both van der Eem |
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Walburga von Mörs |
Friedrich III (VII) von Mörs |
Dietrich V (IV, VI) von Mörs |
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Maria Elisabeth van Zuylen |
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Walburga von Saarwerden |
Johann II von Saarwerden |
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Klara von Vinstingen |
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| Event | Date | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|
| Death | 1448 |
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| Attribute | Date | Description | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|---|
| Nobility Title | FROM 1443 TO 1448 | herr zu Heinsberg |