Gui was born about 1080, the son of unknown parents. The place is not known.
His wife was Hedwige de Dammartin, who he married in 1103. The place has not been found. Their only known child was Eustachie (c1103-1166).
| Event | Date | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|
| Birth | ABT 1080 |
|
| Attribute | Date | Description | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|---|
| Nobility Title | seigneur de Possesse |
| Aliases |
|---|
| Guy de Possesse (seigneur de Possesse) |