virgin. One of the children of Brychan, Dwyn settled in Anglesey, where her name is retained in Llanddwyn and Porthddwyn. Her church was the goal of the sick and especially young men and maidens, as she is the Welsh patron of lovers. The Legend explaining this tells of a certain Maelon who wished to marry her, but she rejected him and prayed to be delivered. She dreamt that she was given a drink which cured her, but the drink turned Maelon to ice. Then she made three requests: that Maelon be unfrozen, that all true-hearted lovers should either succeed in their quest or else be cured of their passion, and that she should never wish to be married. Accordingly she became a nun. In the Middle Ages Llanddwyn was a rich prebend, largely due to the offerings at the shrine and at the holy well, where the movements of fishes were believed to indicate the destiny of those who consulted it. This practice and the invocation of Dwyn for curing sick animals long survived the Reformation: the remote situation of Llanddwyn, perhaps formerly an island, near Newborough Forest (Anglesey), enabled the popular superstitions to survive. Feast: 25 January.
Baring-Gould and Fisher, ii. 387–92;William Worcestre, p. 66.