He worked closely with his predecessor, Archbishop Amulo of Lyons, before his elevation to the episcopate on March 31, 852.
He participated in the predestination controversy which had been precipitated on the church by Gottschalk, whom, like some other leaders, he defended.
This brought him up against the still more powerful Hincmar of Reims, who, in the Synod of Chiersy held in 853, got the endorsement of his four chapters on predestination.
In the national Synod of Savonières which immediately followed, Remigius presented these canons to Charles the Bald.
When Remigius came into his rule he found that certain sources of revenue which he thought properly belonged to his diocese had been taken from it.