One day the two daughters of the King of Meath, named Ethna and Fedalma, went down to the river to bathe, and there they beheld St. Patrick and his band of converts all draped in white robes, for they were celebrating morning prayers. And the princesses seeing strange men in white garments thought they were of the race of the male fairies, the Daine-Sidhe. And they questioned them. Then St. Patrick expounded the ............