Chlothar II
The Alemanni were heathen and it is assumed that the bishopric of Speyer had succumbed in the migration period. The Franks, whose King Chlodwig converted, re-established the diocese in the 5th century and extended its territories east of the Rhine. Bishop Hilderic of Speyer is mentioned in the records as a participant of the synod of Paris in 614 (national council of the Frankish empire reunited by Chlothar II).