Abbot (c. A.D. 700) ST Vulmar or Wulmar, whom the Roman Martyrology calls a man of wonderful holiness, was born in the territory of Boulogne in Picardy.

He was married, but having been separated by force from his wife, he entered himself in the abbey of Hautmont in Hainault, where he was employed to keep the cattle and to hew wood for the community.

He after obtained leave to live alone in a hermitage near Mount Cassel for some years, and then founded near Calais the abbey of Samer, corruptly so called for Saint-Vulmar; this monastery existed until the French Revolution.

Caedwalla, King of the West Saxons, passing that way in 688 on his journey to receive baptism, conferred on the abbey an alms towards carrying on the foundation.

Over time both male and female disciples joined him, and he built two monasteries in the forest, one for men that he led and one for women under his niece Eremberta.

In 688 Ceadwalla, king of the West Saxons, visited him there while travelling to Rome, gave him 30 sous and said he would pray for him.