Gervais was the son of Hugues I de Châteauneuf but his mother is unknown. The date and place of his birth have not been found.
His wife was Mabile de Montgommery. They were married, but the date and place have not been found. Their five known children were Hugues II (c1098->1132), Pierre (?->1107), Gervaise (?->1107), Gasce (?->1107) and Mabille (?->1107).
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| Attribute | Date | Description | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|---|
| Nobility Title | seigneur de Châteauneuf-en-Thymerais |