sentences:  Only in 1773 did the comital couple Franz Karl von der Leyen and Marianne, née Dalberg, move the comital residence from Koblenz to Blieskastel.After Count Franz Karl's death in 1775, his beloved, and now widowed, wife Marianne took on the regency for their underage son, Philipp.The Counts Palatine (Dukes) of Zweibrücken introduced the Reformation according to Martin Luther into their County Palatine in 1537, and in 1588, Count Palatine (Duke) Johannes I forced his subjects to convert to the Reformed faith according to John Calvin (Calvinism).