Note: Do not rely on this information. It is very old.
Merlin
Merlin, the magician and sage of the Arthurian legends, is placed by Geoffrey of Monmouth in the 5th century. He is said to have been the son of a demon and a Welsh princess, and to have gained the power after his baptism of working miracles. In French literature his story is told by Wace and Robert de Borrou. Merlin's Prophecies appeared in French, English, and Latin in the 16th century. A Scottish Merlin is said to have lived in the 6th century; while escaping from some enemies across the Tweed at Drummelzier, where his grave is still shown, he was impaled on a hidden stake. His Prophecies, published at Edinburgh in 1615, embody those of the Cambrian Merlin. The latter is a character in Tennyson's Idylls of the King.