What is "eberigisil"

Eberigisil (died at the end of the sixth century, perhaps 593) was Bishop of Cologne, being the fifth well-attested bishop, and the first with a Frankish name. He is mentioned by Gregory of Tours but always using the past tense, so it is assumed that Eberigisil died before 594. Heriger of Lobbes mentions him as a bishop of Maastricht but this may well be a mix up.

He is revered as a Catholic saint, honoured on 24 October.