Interdisciplinary cooperation enables the two authors to precicly localize and date one of the most lavishly produced manuscript of a medieval German epic during 15th century. With the combination of art-historical and linguistic methods the “Münchener Jüngere Titurel” (BSB, Cgm 8470) – hithero beliefed to be of Tyrolian or Vienese origin – was dated (c. 1430/35) and localised (Regensburg). The exemplary study proves the potential of cooperations within the humanities.