Ruricius I (c. 440 – c. 510) was a Gallo-Roman aristocrat and bishop of Limoges from c. 485 to 510. He is one of the writers whose letters survive from late Roman Gaul, depicting the influence of the Visigoths on the Roman lifestyle. He should not be confused with his son-in-law, Saint Rusticus (Archbishop of Lyon).
Little is known about the life of Ruricius, and some of what information is available is not certain. He is one of four Gallo-Roman aristocrats of the fifth- to sixth-century whose letters survive in quantity: the others include Sidonius Apollinaris, urban prefect of Rome in 468 and bishop of Clermont (died 485), Alcimus Ecdicius Avitus, Bishop of Vienne (died 518); and Magnus Felix Ennodius of Arles, Bishop of Ticinum (died 534). All of them were linked in a tightly bound, Gallo-Roman aristocratic network that provided the bishops of Catholic Gaul.
Although there is scarce information about Ruricius' life, it is known that he eventually became a grandfather, suggesting he must have lived to be at least 65 or 70. He may have died as early as 506 to as late as 510, so this puts his birth date around 440. Likewise, there is no information concerning his birthplace, though he appears to have had strong ties to Aquitaine in the region of Cahors, and there is significant information regarding his family.
According to Venantius Fortunatus, Ruricius was a member of the Anician family, one of the most important aristocratic families in Rome. The details of his ancestry has been a subject of debate; Mathisen's explanation is that Ruricius was the son of a "Constantius" and a "Leontia" based on his premise that his paternal grandfather may have been Flavius Constantius Felix and his mother a member of the aristocratic familia Pontii Leontii of Burdigalia in Aquitania. Further evidence he provides includes (1) for Constantius, on the existence of an ivory consular diptych for Fl. Constantius Felix (cos. 428), patrician and magister militum from 425-430 at Limoges and the fact that Ruricius had a son of that name, and (2) for Leontia, the use of the name Leontius for Ruricius' brother and son.