According to the Annales Bertiniani, at Louviers in February 856 Erispoe's daughter (unnamed in the sources) was betrothed to Charles's young son, Louis the Stammerer, who was granted the ducatus Cenomannicus as subking of Neustria with Le Mans as his capital.
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Ambushed by Count Renaud, Erispoe was badly defeated at the initial engagement at Messac.
Erispoe |
Erispoe's troops had arrived at Messac and were in the process of crossing the Vilaine when Renaud launched his surprise attack.
His wife was a daughter of Erispoe, and in some reconstructed genealogies their daughter marries Berengar of Rennes.