Eustache was the son of unknown parents. The date and place of his birth have not been found.
He died in 1392. The place is not known.
His wife was Marie de Béthune, who he married in BEF 1389. The place has not been found. They had no known children.
| Event | Date | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|
| Death | 1392 |
|