 In the late Visigothic period, at a second stage after the 6th century Cantabrian defeat, the Duchy of Cantabria is attested as being a buffer zone bearing witness to continuous fighting between Visigoths and Basques.In 670, the Visigothic king Wamba was campaigning there against the Basques when he heard of a rebellion in Septimania.Notice of a certain duke Peter of Cantabria, father of Alfonso I of Asturias, is attested on 9th century Asturian documents for the first years of the Umayyad conquest of Hispania.