Tetricus of Langres (died 572/73) was Bishop of Langres from 539/40 until his death.Martin Heinzelmann: Gregor von Tours (538–594). „Zehn Bücher Geschichte“. Historiographie und Gesellschaftskonzept im 6. Jahrhundert. Wissenschaftliche Buchgesellschaft, Darmstadt 1994, , p. 16; Karl Friedrich Stroheker: Der senatorische Adel im spätantiken Gallien. Alma Mater Verlag, Tübingen 1948 (reprinted Darmstadt 1970), p. 223, no. 385.

Tetricus came from a noble Gallo-Roman senatorial family, his father was Gregory of Langres. Tetricus was one of his three sons and the only one known by name. He succeeded his father 539/40 as Bishop of Langres and is said to have held this office for 33 yearssee Venantius Fortunatus carm 4.3. Like his father, he resided chiefly in Dijon. Tetricus participated in the Fifth Council of Orléans (549) and the Council of Paris (552).

According to Gregory of Tours, who was a later relative of Tetricus,Gregory of Tours was a grandson of his brother. the Merovingian king Chilperic I had a dream in which Tetricus, along with Agricola of Chalon-sur-Saône and Nicetius of Lyon appeared to the king.Gregory of Tours, History VIII 5.

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