Leo Wiener was a historian and linguist of Polish-Jewish origin and was professor of Slavic literatures at Harvard in the early 20th century. This essay discusses French words used by Wolfram von Eschenbach, a German knight and epic poet best known for his Parzival. Such borrowings highlight the permeability of French/ German identity in the Middle Ages, and anyone with an interest in Medieval history or literature will find this a useful reference document.