Name of the Saint (Idesbaldus Van der Gracht) who founded the Abbey of the Dunes. Surroundings became later the village of Sint-Idesbald (nearby Koksijde, Belgium).
Used to be brewed by Het Damberd (later called Damy), Olsene, Belgium. Since that brewery went broke, it is brewed by Huyghe, Melle, Belgium.