Berserker (Ber`serker) , a Norse warrior who went into battle unharnessed, whence his name (which means bare of sark or shirt of mail), and is said to have been inspired with such fury as to render him invulnerable and irresistible.
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Berryer, Pierre Antoine * Bert, Paul