Bistumswappen of Passau.
Waldrich (* unknown; † 22 August 804) was the seventh
Bishop of Passau
The Diocese of Passau (; ) is a Latin diocese of the Catholic Church in Germany that is a suffragan of the Archdiocese of Munich and Freising.Wisurich of Passau. In his office, the expansion of the diocesan borders falls to the east, to the rivers March and Leitha. In addition, Passau was subordinated to the new metropolis of Salzburg as a suffragan bishopric. Like many of his successors, Waldrich vehemently, but in the end unsuccessfully resisted this subordination.Herbert Wilhelm Wurster: Das Bistum Passau und seine Geschichte. 4 Bände, Straßburg 1994-2010.