Favonius was also a Roman nomen.
No doubt inspired by the tombstone, the computer game Dark Ages of Camelot[?] features a powerful undead monster named Favonius Facilis.
... congenita of Leber, type 2[?] Amaurosis congenita of Leber[?] Amaurosis hypertrichosis[?] Amaxophobia Ambral syndrome[?] Ambras syndrome[?] Ambulophobia[?] ...