Fierabras (nickname)

Fierabras (French Fièrebrace) is a medieval nickname derived from the Latin fera brachia (wild arms) or ferox brachium (ferocious arm). It is first recorded by Pierre de Maillezais, writing c. 1060, as a nickname of William IV, Duke of Aquitaine (ruled 963–90).^[1] It can also refer to:

• Fierabras, a fictional Saracen knight in several chansons de geste
• William of Gellone, duke of Toulouse (r. 790–811)