Tonantius Ferreolus (also called Tonance Ferréol in modern French) (between about 440 and 450 – between 511 to after 517), was a vir clarissimus, or Gallo-Roman senator. He lived in Narbo (modern Narbonne). Tonantius Ferreolus was a witness when Sidonius Apollinaris, then bishop of Clermont, between 461 and 467, sent a letter to his friend, Donidius, describing a visit he made, a "most delightful time in the most beautiful country in the company of Tonantius Ferreolus (the elder) and Apollinaris, the most charming hosts in the world". Tonantius was on the estates of his father when Sidonius Apollinaris visited between 461 and 467. As Sidonius relates, "at Prusianum, as the other (estate) is called, (the young) Tonantius and his brothers turned out of their beds for us because we could not