L'évêque entre autorité sacrée et exercice du pouvoir. L'exemple de Gérard de Cambrai (1012-1051)

Imperial bishops of the eleventh-century exerted many political jurisdictions in their diocese. But how far this power discharge was compatible with their holy office ? The study of the disputes Gerard Ist, bishop of Cambrai (1012-1051) had to cope with in his diocese reveals that his holy authority was quite challenged when he exercised potestas. So, his literary, hagiographie, liturgie or polemic activity aimed at one particular object : restore bishop's holy authority, in drawing up an ideal portrait, inspired by the Regula Pastoralis ones.