Bernhard was the son of Otto von Horstmar and Adelheid von Ahaus. The date and place of his birth have not been found.
He died after 05 JUL 1307. The place is not known.
His wife was Sophie van Loon. They were married, but the date and place have not been found. Their three known children were Jutta (c1252-1303), Otto II (c1262-<1325) and sir Johann (?->1323).
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sir Bernhard I von Ahaus |
Otto von Horstmar |
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Adelheid von Ahaus |
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| Event | Date | Details | Source | Multimedia | Notes |
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| Death | AFT 5 JUL 1307 |
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| Attribute | Date | Description | Details | Source | Multimedia | Notes |
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| Nobility Title | herr von Ahaus |