Thierry de Argonne

Duke of Argonne. Thierry was frequently referred to as a brother of Geoffrey of Anjou. There is no mention of his parents.

In Chanson de Roland, Thierry and his brother were among those close to Charlemagne. In the battle against Baligant, Thierry was given command of the ninth division, which consisted of men from Lorraine and Burgundy.

Thierry was Charlemagne's champion in the trial against Ganelon, in which he defeated Pinabel, Ganelon's kinsman and champion, in fierce single combat. Pinabel struck him on the helm. Thierry received a wound to his face from his forehead to his right cheek, but according to the poem, God protected him from death. Thierry returned the blow, which split Pinabel's head down to his nose. This victory resulted in Ganelon's conviction of guilt, and his immediate execution.