Myrddin "Merlin", Celtic (Britania, Irish & Welsh) Sorcerer, Druid, Wizard and Magician. Originally an ancient Welsh Druid, priest of the old religion, and great magician. He was transformed in the later Arthurian sagas. Tradition says he learned his powerful magic from the Goddess in her forms of Morrigan, Viviane, Nimue, and Lady of the Lake. Legend says he now lies sleeping in a hidden crystal cave. Variants: Merddin, Merlyn.