Later versions of the story, sometimes attributed to Aesop, began to appear from the mid-sixth century under the title "The Shepherd and the Lion". In Chrétien de Troyes' 12th-century romance, "Yvain, the Knight of the Lion", the knightly main character helps a lion that is attacked by a serpent. The lion then becomes his companion and helps him during his adventures. A century later, the story of taking a thorn from a lion's paw was related as an act of Saint Jerome in the Golden Legend of Jacobus de Voragine (). Afterwards the lion joins him in the monastery and a different set of stories follows.