Alan II (died 952), nicknamed
Wrybeard or
Twistedbeard (often given in French:
Barbetorte) and
Alain le Renard ("the Fox"), was
Count of Vannes,
Poher, and
Nantes, and
Duke of Brittany from 938 to his death. He was the grandson of King
Alan the Great by Alan's daughter and her husband Mathuedoi, Count of Poher. He expelled the
Vikings from Brittany after an occupation that lasted from 907 to about 939.