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In page Fürfeld:

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On 13 June 897, a Monday, in Herlisheim, King Zwentibold issued a donation document for Saint Maximin's Imperial Abbey near Trier, which, among other things, gave Fürfeld its first documentary mention, as Furnifeld. This document is preserved in the original and is now kept at the Bibliothèque nationale de France in Paris. King Zwentibold, Charlemagne’s great-great-great-grandson, had a reputation that preceded him, for he was known not to be one to avoid a fight. Contemporaries called him brazen, spiteful and violent, and it is reported that once, in the course of a difference of opinion with his chancellor – Archbishop Ratbod of Trier, no less – Zwentibold beat him with a club. The rights laid down in the document were confirmed several times: