Saint Valerius of Treves (†320) was a semi-legendary Bishop of Trier. His feast day is 29 January.
According to an ancient legend, St. Valerius was a follower of Saint Eucharius, the first bishop of Trier. Eucharius was sent to Gaul by Saint Peter as bishop, together with the deacon Valerius and the subdeacon Maternus, to preach the Gospel.
They came to the Rhine and to Ellelum (Ehl) in Alsace, where Maternus died. His two companions hastened back to St. Peter and begged him to restore the dead man to life. St. Peter gave his pastoral staff to Eucharius, and, upon being touched with it, Maternus, who had been in his grave for forty days, returned to life. The Gentiles then converted in large numbers. After founding many churches the three companions went to Trier where evangelizing progressed so rapidly that Eucharius chose that city for his episcopal residence. An angel announced to him his approaching death and pointed out Valerius as his successor. Eucharius died on December 8, having been bishop for twenty-five years, and was interred in the church of St. John outside the city.