Book excerpt: Penance in the ancient church -- The penitentials -- The condition of the texts -- Early Irish penitential documents -- Early Welsh penitential documents -- Penitentials of the Anglo-Saxon church -- Penitentials by Irish authors which were apparently compiled on the continent -- Anonymous and pseudonymous Frankish and Visigothic penitentials of the eighth and ninth centuries -- Penitentials written or authorized by Frankish ecclesiastics -- Selections from later penitential documents -- Penitential elements in medieval public law -- Synodical decisions and ecclesiastical opinions relating to the penitentials -- An eighth-century list of superstitions -- Selections from the customs of Tallaght -- Irish canons from a Worcester collection -- On documents omitted -- The manuscripts of the penitentials.