Elpidius is a Roman cognomen.
It was the name of several bishops and saints:
Elpidius, bishop of Huesca (c.522-546) Elpidius, bishop of Tarazona Elpidius, bishop of Comana (Cappadocia) Saint Elpidius, bishop of Lyon Saint Elpidius the Cappadocian, abbot and patron saint of Sant'Elpidio a Mare Elpidius (rebel), 8th-century Byzantine governor of Sicily and rebel another name for St. Expeditus
See also Elpidio (disambiguation) Sant'Elpidio (disambiguation)