Vibius Sequester is the author of the De fluminibus, fontibus, lacubus, nemoribus, paludibus, montibus, gentibus per litteras, a short repertoire of geographical names mentioned by Virgil, Silius, Lucan and Ovid. The text, written at the end of the 4th or in the 5th century ce for the author’s son, Vergilianus, was likely intended to be used at school as an instrument providing basic information about the collected toponyms and ethnonyms. Despite the occasional mistakes in the text, Sequester’s repertoire represent a fine instance of school culture in Western Late Antiquity. The work was much appreciated by Italian humanists, which explains that it was copied in nearly 50 recentiores manuscripts; all of them, however, descend from a second-half of the 9th century manuscript (Vat. Lat. 4929).Vibius Sequester was the author of a short alphabetic repertoire of geographical names mentioned in Latin poetry, probably compiled at the end of the 4th or in the 5th century .