Wolfram von Eschenbach
At a later time, the German poet Wolfram von Eschenbach incorporated the swan knight Loherangrin into his Arthurian epic "Parzival" (first quarter of the 13th century). A German text, written by Konrad von Würzburg in 1257, also featured a Swan Knight without a name. Wolfram's and Konrad's were used to construct the libretto for Richard Wagner's opera "Lohengrin" (Weimar 1850).