The quindecemviri sacris faciundis were the fifteen members of a college for less clearly defined religious duties. Most notably they guarded the Sibylline Books and it was for them to consult these scriptures and interpret them when requested to do so by the senate. The Sibylline Books being evidently understood as something foreign by the Romans, this college also was to oversee the worship of any foreign gods which were introduced to Rome.

Initially there was three members to the college of epulones (banqueting managers), though later their number was enlarged to seven. Their college was by far the newest, being founded only in 196 BC. The necessity for such a college obviously arose as the increasingly elaborate festivals required experts to oversee their organization. [1]