sentences:  Because the Leyens retained the old beliefs – that is, Catholicism (after all, the family, whose roots were in Gondorf on the Moselle, had produced several Archbishops of both Trier and Mainz) – religious matters were very problematic, with disputes breaking out several times between them and the Dukes of Palatinate-Zweibrücken, who had embraced Protestantism.Often enough, these disagreements ended up before the Reichskammergericht in either Speyer or Wetzlar.Otherwise, relations between the Catholic House of Leyen and the Calvinist-oriented Duchy of Palatinate-Zweibrücken were generally good.