sentences:  Duke Johannes II fled ahead of the Siege of Zweibrücken and went into exile in Metz in 1635, dying there later that same year.The union of the Swedes, who were likewise marauding through the Duchy of Palatinate-Zweibrücken robbing and murdering, with the French extended the war by more than a decade, although Emperor Ferdinand III was by then advocating peace.Only when the peace negotiations of Münster and Osnabrück had begun in 1644 did the Imperial troops end their nine-year occupation and withdraw.