Fernand Benoît found the earliest attestations of a cult of Epona in the Danubian provinces and asserted that she had been introduced in the limes of Gaul by horsemen from the east.Benoît, F. (1950). Les mythes de l'outre-tombe. Le cavalier à l'anguipède et l'écuyère Épona. Brussels, Latomus Revue d'études latines. That suggestion has not been generally taken up.
