He was one of the principal senators of Autun, and continued from the death of his wife a widower till the age of fifty-seven, at which time, for his singular virtues, he was compelled from his private penitential life, and consecrated bishop of Langres, which see he governed with admirable prudence and zeal thirty-three years, sanctifying his pastoral labours by the most profound humility, assiduous prayer, and extraordinary abstinence and mortification. An incredible number of infidels were converted by him from idolatry, and worldly Christians from their disorders. He died about the beginning of the year 541, but some days after the Epiphany. Out of devotion to Saint Benignus, he desired to be buried near that saint’s tomb at Dijon, which town was then in the diocese of Langres, and had often been the place of his residence. This was executed by his virtuous son Tetricus, who succeeded him in his bishopric. The 4th of January seems to have been the day of the translation of his relics. He is mentioned in the Roman Martyrology. See his miracles recorded by Saint Gregory of Tours.
- Father Alban Butler. “Saint Gregory, Bishop of Langres”. , 1866. CatholicSaints.Info. 13 January 2013. Web. 1 August 2015. <>