The Second Council of Lyon was called by King Guntram of Burgundy. The exact date is unknown since the acts give contradictory dates: the sixth year of Guntram`s rule (November 567-November 568) and the third indiction (September 569-August 570). This council could be most probably identified with the one described by Gregory of Tours in his Histories (5.20). According to Gregory, the direct reason for the synod was the violent attack launched by the armed bands of Bishops Salonius of Embrun and Sagittarius of Gap on Bishop Victorus from Saint-Paul-Trois-Châteaux. During the council`s proceedings both accused bishops were excommunicated.