Gauriel von Muntabel, by Konrad von Stoffeln, dates from the late thirteenth century; it offers much evidence for literary reception in the middle ages from the prominent part which it accords to the heroes of earlier romances, such as Hartmann von Aue's Erec, its several references to characters from contemporary authors, including Wirnt von Grafenberg, and its thematic relationship to works like Marie de France's Lanval.