Anthelm (fl. 763–770) was the 4th Bishop of Passau from 763–764 to 764–770.August Leidl: Die Bischöfe von Passau 739–1968 in Kurzbiographien. Verlag des Vereins für Ostbairische Heimatforschung, (Passau, 1978)Herbert Wilhelm Wurster: Das Bistum Passau und seine Geschichte. 4 Bände, Straßburg 1994-2010. His existence is verifiable. The exact dates of his reign are unknown. It is probable that during his office (or his successor's), the bones of St. Valentin were bought from Trent to Passau.
References