Greek inscription found at Sepphoris, tentatively dated to the fifth century CE, mentions Judah, the archisynagogos (leader of a synagogue) of Sidon, and Severianus Afrus, the archisynagogogs of Tyre.
Nagy, Rebecca, Sepphoris in Galilee- Crosscurrents of Culture. Raleigh- North Carolina Museum of Art, 1996.