Guitard later became loyal to Arthur and fought for him in the Roman campaign. During the war, Guitard learned that a Roman force was planning to liberate Roman prisoners when they were being escorted to a Paris prison. Guitard arrived just in time and saved Arthur’s men from defeat.
His name probably comes from the Welsh Gwitart.
Historia Regum Britanniae | Geoffrey of Monmouth, c. 1138
Roman de Brut | Wace, c. 1155
Brut | Layamon, late 12th century to mid-13th century