The ancient churches and cells of the saints were generally placed in the vicinity of a well, which then became sanctified and endowed with miraculous healing power. Or the well may have been held sacred by the Druids, and the scene of their pagan rites; therefore selected by the saint specially as his dwelling-place, so that he might bring it under the fosterage and holy influence of Christianity.

The grave of the great Fionn was laid by a celebrated well............