Saint Reticius (or Rheticus, Rheticius) (French: Saint Rhétice) (early 4th century) was a bishop of Autun, the first one known to history, according to the Catholic Encyclopedia.
He was a Gallo-Roman, and an ecclesiastical writer, and served as bishop of this see from around 310 to 334 AD.
[1] He traveled on behalf of Emperor Constantine the Great in 313 to the Synod of Rome and in 314 to the Synod of Arles, in order to bring about a resolution to the dispute with the Donatists.
[2] Gregory of Tours praised Reticius in his writings.
[2] Saint Jerome mentions Reticius in his De Viris Illustribus: Reticius was succeeded by Cassian of Autun, also venerated as a saint.