Baian (or Baianus)
Son of Simeon, king of the Bulgarians of 970 C.E., and a
mighty magician, who was said to transform himself into a wolf
whenever he desired. He could also adopt other shapes and
render himself invisible. A primary example of what is termed
a werewolf, he is alluded to by Jean de Nynauld in his book De
la lycanthropie (Paris, 1615).