From the Council of Troyes, A.D. 1007

Canon IV. Concerning married priests or concubinaries, unless they have ceased, we command by prescribing that they be moved from the altar and at the same time segregated from the choir. But if even then they have not ceased, let them be kept far from the thresholds of the church, and let them not enjoy even that lay communion. We establish the same also concerning deacons.

Married priests are called concubinaries because the discourse is about marriage which they entered after sacred order had been received, and no marriage of this sort was any longer held valid. For this reason they are commanded to cease, that is, to separate themselves from the concubines. Already here it appears clearly enough that marriages of this sort were held to be null. Cf. Canon X of the Council of Toledo, A.D. 655, and Canon VII of Orleans, A.D. 538, and Canon II of Carthage, A.D. 390.