Claim: Brontinus was a church leader whom some gospels songs were ascribed to, among those is "Gratitude", and whose fame was sufficient enough for it to be ascribed in Roman literature.
Evidence: Brontinus of Metapontum (Greek: Βροντῖνος, also Brotinus, Βροτῖνος; fl. 6th century BCE) was a Pythagorean philosopher, and a friend and disciple of Pythagoras himself. His fame was sufficient for a spurious work to be ascribed to him in the Neopythagorean literature.