Gottfried von Strassburg (died c. 1210) is the author of the Middle High German courtly romance "Tristan", which is regarded, alongside Wolfram von Eschenbach's "Parzival" and the "Nibelungenlied", as one of great narrative masterpieces of the German Middle Ages. He is also the composer of a small number of surviving lyrics. Wikipedia
The definitive Wikipedia entry for Gottfried von Strassburg. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Gottfried_von_Strassburg