bishop of Salamanca, A.D. 646. Egeria (or .Egeria), in Roman mythology, was an Italian spring-nymph, protecting deity of the cityof Rome, who lived in the sacred woods of the Camene, and blessed the peaceful, wise ruler Numa by her useful advice. She is said by some to have been the wife of Numa. When the king died she retreated from Rome, and was so overcome with sorrow that Diana, out of sympathy, changed her into a spring, which has her name.