After Béroul and Thomas, the most important development in French Tristaniana is a complex grouping of texts known broadly as the Prose "Tristan". Extremely popular in the 13th and 14th century, the narratives of these lengthy versions vary in detail from manuscript to manuscript. Modern editions run twelve volumes for the long version, which includes Tristan's participation in the Quest for the Holy Grail, or five volumes for a shorter version without the Grail Quest. It had a great influence on later medieval literature, and inspired parts of the Post-Vulgate Cycle and the "Roman de Palamedes".