sentences:  It seems likely that it began as a foundation of Dagobert I for monks under the Rule of Saint Columbanus.It was certainly in existence by 780 under Fleido as abbot, later Bishop of Speyer.In 840 the monastery burnt down and the request of the monks for funds for its re-building, addressed to Otkar, Archbishop of Mainz, previously abbot of Klingenmünster, constitutes the first direct documentary evidence.