Egeria
In
Roman mythology, the goddess
Egeria ("of the black poplar") was a goddess of birth, wisdom and one of the
Camenae. She was married to
Numa Pompilius, second king of
Rome and taught him matters relating to being a wise and just king.
When Numa Pompilius died, she changed him into a well, located in the forest of Aricia, holy to Diana, in Latium.