The Fourth Council of Paris was called in order to resolve a dispute between Kings Sigibert and Guntram. The subject of the quarrel was the appointment of Presbyter Promotus to the bishopric of Châteaudun (Castellodunum, Duno). This castle, itself in the possession of Sigibert, was placed in the diocese of Chartres, the city belonging to the realm of Guntram. Sigibert pleaded to the Bishop Aegidius of Reims who consecrated Promotus a bishop. The bishops gathered in Paris, all coming from the kingdom of Gunram, condemned this ordination. The acts of this synod conist of three letters, the first of which is the address of Bishop Pappolus of Chartres to the council. The second letter was sent by the synodal fathers to Aegidius of Reims: the bishops condemned his actions and deposed Promotus. In the last letter, the bishops ask Sigibert not to support Promotus any longer.

 

Gregory of Tours left the account of these events in his Histories (4.47). The fate of Promotus is described later in 7.17.