 It was suppressed by the Napoleonic Concordat of 1802, which annexed to the Roman Catholic Diocese of Troyes the Dioceses of Sens and Auxerre.The somewhat complex agreement gave the title of Bishop of Auxerre to the bishops of Troyes, and the purely honorary title of Archbishop of Sens to the Archbishop of Paris (otherwise deprived of all jurisdiction over Sens).The Concordat of 1817 reestablished the Archdiocese of Sens and the Diocese of Auxerre, but this arrangement did not last.