Ogier the Dane (; ) is a legendary knight of Charlemagne who appears in many Old French "chansons de geste". In particular, he features as the protagonist in "La Chevalerie Ogier" (ca. 1220), which belongs to the "Geste de Doon de Mayence" ("cycle of the rebellious vassals"). The first part of this epic, the "enfance"["s"] (childhood exploits) of Ogier, is marked by his duel against a Saracen from whom he obtains the sword Cortain, followed by victory over another Saracen opponent from whom he wins the horse Broiefort. In subsequent parts, Ogier turns into a rebel with cause, seeking refuge with the King of Lombardy and warring with Charlemagne for many years, until he is eventually reconciled when a dire need for him emerges after another Saracen incursion.