Isaac was the son of Gossuin II de Mons and Irmengarde. The date and place of his birth have not been found.
He died after 1140. The place is not known.
His wife was Ide d'Ath. They were married, but the date and place have not been found. They had no known children.
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Isaac de Mons |
Gossuin II de Mons |
Gossuin I de Mons |
Rodolphe de Hainaut |
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| Event | Date | Details | Source | Multimedia | Notes |
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| Death | AFT 1140 |
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