One of the most striking facts connected with the Celtic religion is the large number of names of deities which it includes.

These names are known to us almost entirely from inscriptions, for the most part votive tablets, in acknowledgment of some benefit, usually that of health, conferred by the god on man.

In Britain these votive tablets are chiefly found in the neighbourhood of the Roman walls and camps, but we cannot be always certain that the deities mentioned are indigenous.

In Gaul, however, we are on surer ground in associating certain deities with certain districts, inasmuch as the evidence of place-names is often a guide.

These inscriptions are very unevenly distributed over Gaulish territory, the Western and the North-Western districts being very sparsely represented.
In the present brief sketch it is impossible to enter into a full discussion of the relations of the names found on inscriptions to particular localities, and the light thus thrown on Celtic religion; but it may be here stated that investigation tends to confirm the local character of most of the deities which the inscriptions name.