A number of the surviving Dutch language epic works, especially the courtly romances, were copies from or expansions of earlier German or French efforts, but there are examples of truly original works (such as the anonymous "Karel ende Elegast") and even Dutch-language works that formed the basis for version in other languages (such as the morality play "Elckerlijc" that formed the basis for "Everyman (play)"). Another genre popular in the Middle Ages was the fable, and the most elaborate fable produced by Dutch literature was an expanded adaptation of the Reynard the Fox tale, "Vanden vos Reynaerde" ("Of Reynard the Fox"), written around 1250 by a person only identified as Willem.