Annwyn Avalon

“The White Spring is a calcium-rich spring that leaves white deposits and is dedicated to the goddess Brighid and the faery king Gwyn ap Nudd. The Chalice Well, which is rich in iron deposits, is home to the Lady of Avalon, who appears as a white lady or faery to those in need of healing or relief. This figure is variously identified as Morgan la Fae, St. Aeswitha, Melusine, or other faery queens. The Black Well is an obscure and little-known well that survives in the crypt of the Lady Chapel in Glastonbury Abbey. It is called St. Joseph's Well, although it is, no doubt, a remnant of goddess worship. The well may once have been dedicated to St. Aeswitha, a local woman with many faery attributes, whose depiction in the small chapel nearby gives clues to her origin. In the painting, she is shown holding a rose and a Celtic cross, suggesting that perhaps her powers of healing are considered to be sub rosa—hidden under the rose.”
― Annwyn Avalon, The Way of the Water Priestess: Entering the World of Water Magic