Reform and the Basque dukes of Gascony: a context for the origins of the Peace of God and the murder of Abbo of Fleury

The tenth‐century Basque rulers of the early medieval duchy of Gascony created novel temporal and ecclesiastical institutions through which to express their power, and negotiated, from a position of some prestige, relationships with both monastic reformers and the Poitevin dukes of neighbouring Aquitaine. There a member of the Gascon ducal family summoned what would come to be known as the first council of the ‘Peace of God’ movement, usually portrayed as an Aquitainian initiative. The impact of the Gascons’ record on their own obscure territories also provides a context for the murder of Abbo, abbot of Fleury.