Thibaud was the son of Jean de Heilly but his mother is unknown. The date and place of his birth have not been found.
His wife was Mabille d'Encre, who he married in ABT 1090. The place has not been found. Their only known child was Vautier II (?-?).
| Attribute | Date | Description | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|---|
| Nobility Title | seigneur de Heilly |
Note 1
son of Gauthier I de Heilly, Seigneur de Heilly and Hortense de Raincheval