For the benefit of the uninformed, however, it may be stated that she flourished about the middle of the seventh century, and was the daughter of Thewith, one of the chief lords of Wales.

Devoutly educated by a monk named Beuno, who afterwards received canonization, she took the veil, and retired to a small monastery (the ruins of which still exist), built by her father near the scene of her subsequent martyrdom.

Persecuted by the addresses of Caradoc, son of Alan, Prince of Wales, she fled from him to avoid his violence.

He followed, and inflamed by fury at her resistance, struck off her head.
For this atrocity, the earth instantly opened and swallowed him alive, while from the spot where the head had fallen gushed forth a fountain of unequalled force and purity, producing more than a hundred tons a minute.

The bottom of this miraculous well is strewn with pebbles streaked with red veins, in memory of the virgin saint from whose blood it sprung.