Heldiarne was born about 1085, the daughter of Gossuin I de Mons and Ermengarde de Chaumont. The place is not known.
She died after 1131. The place is not known.
Her husband was Hugues II d'Oisy. They were married, but the date and place have not been found. Their two known children were Clémence (1110-<1165) and Simon (?-c1171).
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Heldiarne de Mons |
Gossuin I de Mons |
Gossuin II de Mons |
Gossuin I de Mons |
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Ermengarde de Chaumont |
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| Event | Date | Details | Source | Multimedia | Notes |
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| Birth | ABT 1085 |
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| Death | AFT 1131 |
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