The original diocese is traditionally thought to have been created in the 3rd century by St. Denis and corresponded with the Civitas Parisiorum; it was elevated to an archdiocese on October 20, 1622.

Paris was a Christian centre at an early date, its first apostles being St. Denis[1] and his companions, Sts.

Until the Revolution the ancient tradition of the Parisian Church commemorated the seven stations of St. Denis, the stages of his apostolate and martyrdom: Clovis founded, in honour of the Apostles Peter and Paul, a monastery to which the tomb of St. Genevieve drew numbers of the faithful, and in which St. Clotilde, who died at Tours, was buried.

The episcopate of Maurice de Sully (1160-96), the son of a simple serf, was marked by the consecration of the Cathedral of Notre-Dame.

[7] Its suffragan dioceses, created in 1966 and encompassing the Île-de-France region, are Créteil, Evry-Corbeil-Essonnes, Meaux, Nanterre, Pontoise, Saint-Denis, and Versailles.