The lais of Marie de France are a series of twelve short narrative Breton lais by the poet Marie de France. They are written in Anglo-Norman and were probably composed in the late 12th century, most likely between 1155-1170. The short, narrative poems generally focus on glorifying the concept of courtly love by the adventures of their main characters. Marie's lais are thought to form the basis for what would eventually become the genre known as the Breton lais. Despite her stature in Anglo-Norman literature and medieval French literature generally, little is known of Marie herself, but it is thought that she was born in France and wrote in England. Source: Wikipedia (en)