The Geste du roi is the title of one of the literary cycles that compose the Chansons de Geste. In the Chansons of the Geste du roi, the chief character is usually Charlemagne or one of his immediate successors. A pervasive theme is the King's role as champion of Christianity. This cycle contains the first of the chansons to be written down, the Chanson de Roland or The Song of Roland.