According to the biography
Vitae Dymphnae et S. Gereberni presbiteri (English: Life Dymphna and St. Gerebern priest), which Peter of Cambrai, a canon of the Abbey of St-Géry-et-Aubert in Cambrai, recorded in the 13th century, Gerebernus was an Irish priest who lived in the 6th or 7th centuries. He was the tutor of
Saint Dymphna, the daughter of an Irish tribal king. After her mother's death, the king wanted Dymphna to marry. She then fled with Gerebern to
Geel in what is now Belgium, where they were discovered and beheaded by the king. According to legend, both Dymphnas and Gerebernus' bones were stolen from Geel in their coffins by "robbers from Xanten". According to popular belief, the stealing of the bones of saints was not considered theft, as they could only be stolen if the saint agreed. However, Dymphna's bones could no longer be moved on the way to Xanten, and some citizens of Geel are said to have pursued the "robbers", so that they took some of Gerebernus' bones from the coffin and fled. Only a few kilometers before Xanten, in the area of today's Sonsbeck, Gerebernus' bones could no longer be moved, so they were buried there and a chapel was built for him. ==Legacy==