L'âtre périlleux (Old French L'atre perillous, English The Perilous Cemetery) is an anonymous 13th century poem written in Old French in which Gawain is the hero. The name comes from just one of the adventures Gawain takes part in. Forced to spend the night in a chapel in a cemetery, he encounters a woman who has been cursed and is forced to spend the night with a devil each night. He defeats the devil and liberates her. The story draws on influences from other Arthurian romances, such as those of Raoul de Houdenc and Chrétien de Troyes.
Plot.
A knight (later named as Escanor) takes a woman from King Arthur's court and defies any knight to take her back. Kay initially pursues him but is defeated. Gawain is distracted when he goes after him when he sees three women crying. They are lamenting the death of 'Gawain', their story is confirmed by a valet who has had his eyes gouged out.
Gawain leaves and, unable to find shelter, takes shelter in a chapel in the middle of a cemetery. It is revealed this is the 'perilous' cemetery. There he meets a woman who has unwittingly done a deal with a devil and, in order to have her released, Gawain battles and kills it.
Gawain takes the woman with him in his pursuit of Escanor, who he finds and kills, and takes both women back to the court of King Arthur. He leaves again. In a forest, he meets Raguidel, Espinogre, Cadrès and Cadrovain. Cadrès is crying because of his love for a woman, but in order to win her, he must defeat twenty knights in battle. They defeat the twenty knights between them.
Tristan invites them all to his castle, where Gawain finally learns the truth of his apparent death. Two knights loved two sisters. They, however, professed to love Gawain, despite having never met him. Gomeret and l'Orgueilleux Fée went in search of Gawain and, finding a knight wearing almost identical armor, killed him. Gawain tracks them down and defeats them both in battle. They return to Arthur's court where several marriages take place.
A plot summary in French, written by Gaston Paris, is available in "Histoire littéraire de la France", tome 30, 1888 (see below).
Gallery.
The following are from BnF fr. 1433, as it is the only manuscript to contain historiated letters or miniatures.