Jehan was born about 1165, the son of unknown parents. The place is not known.
His wife was Mahaut de la Roche-Derrien, who he married in 1204. The place has not been found. They had no known children.
| Event | Date | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|
| Birth | ABT 1165 |
|
| Attribute | Date | Description | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|---|
| Nobility Title | seigneur du Liscoët et de Tréac |
Note 1
fils de Pierre, seigneur du Liscoët et Tréac