Felix died in 647 or 648, after he had been bishop for seventeen years. After his death, which probably occurred during the reign of Anna of East Anglia, Thomas, a Fenman, became the second Bishop of the East Angles. Felix was buried at Dommoc, but his relics were at a later date removed to Soham, according to the twelfth-century English historian William of Malmesbury. His shrine was desecrated by the Vikings when the church was destroyed. Some time later, "the body of the saint was looked for and found, and buried at Ramsey Abbey". Ramsey was noted for its enthusiasm for collecting saints' relics, and in an apparent attempt to out-compete their rivals from the abbey at Ely, the Ramsey monks escaped by rowing their boats through thick Fenland fog, carrying with them the bishop's precious remains.