Johan was the son of unknown parents. The date and place of his birth have not been found.
His wife was Catharina van Meetkerke. They were married, but the date and place have not been found. Their only known child was Maria (?-1378).
| Attribute | Date | Description | Details | Source | Multimedia | Notes |
|---|---|---|---|---|---|---|
| Nobility Title | heer van Koekelare |