Konrad’s von Würzburg ‘Trojanerkrieg’ - only fragmentary preserved because of its author’s death in 1287 and finally completed by an anonymous writer at the beginning of the 14th century- was one of the most-read books of that time and it formed the basis of the material put in prose fiction. The here presented critical edition by Heinz Thoelen and Bianca Häberlein is founded and researched on the complete number of manuscripts known up to the present. As the Straßburg manuscript A got lost Thoelen / Häberlein took the copy af Georg Karl Frommann from 1836 in its place. The editors also made an evaluation of the complete fragmentary editions of the 18thand 19thcenturies hereby including Adelbert von Keller’s edition from 1858 and Karl Bartsch’s collection of variations and proposals for corrections from 1877.