Aucassin et Nicolette (12th or 13th century) is an anonymous medieval French chantefable, or combination of prose and verse (literally, a "sung story", similar to a prosimetrum).
The work probably dates from the late 12th or early 13th century, and is known from only one surviving manuscript, discovered in 1752 by medievalist Jean-Baptiste de La Curne de Sainte-Palaye (BnF, Fonds Français 2168).
Stylistically, the chantefable combines elements of many Old French genres, such as the chanson de geste (e.g., The Song of Roland), lyric poems, and courtly novels—literary forms already well-established by the 12th century. It is the only known chantefable, and thus from this work the term chantefable is coined from the concluding lines: “No cantefable prent fin” ("Our chantefable is drawing to a close").
The story begins with a song which serves as prologue; and then prose takes up the narrative. It recounts the tale of Aucassin, son of Count Garin of Beaucaire, who so loved Nicolette, a Saracen maiden, who had been sold to the Viscount of Beaucaire, baptized and adopted by him, that he had forsaken knighthood and chivalry and even refused to defend his father's territories from enemies. Accordingly, his father ordered the Viscount to send Nicolette away, but instead the Viscount locked her in a tower of his palace. Aucassin is imprisoned by his father to prevent him from going after his beloved Nicolette. But Nicolette escapes, hears Aucassin lamenting in his cell, and comforts him with sweet words. She flees to the forest outside the gates, and there, in order to test Aucassin's fidelity, builds a rustic home to await his arrival. When he is released from prison Aucassin hears from shepherd lads of Nicolette's hiding-place, and seeks her bower. The lovers, united, resolve to leave the country. They board a ship and are driven to the (fictional) kingdom of "Torelore", whose king they find in child-bed while the queen is with the army. After a three years' stay in Torelore they are captured by Saracen pirates and separated. The wind blows Aucassin's boat back to Beaucaire - where he succeeds to Garin's estate. Meanwhile another wind carries Nicolette to "Cartage" (perhaps a play on Carthage or Cartagena). The sight of the city reminds her that she is the daughter of its king. She informs the kind and soon it is planned that she should marry a Saracen king. She avoids this by disguising herself as a minstrel. She then sets sail for Beaucaire to rejoin her beloved Aucassin. There, before Aucassin who does not immediately recognize her, she sings of her own adventures and the love between them. Finally, in due time she makes herself known to him, and the two marry. The story ends by saying that now the two have found (lasting) happiness the narrator has nothing left to say.