 The Hesse-Homburg and Hesse-Rotenburg estates seceded from the opponents in 1622 and 1627.Though Hesse-Darmstadt and Hesse-Kassel reached an agreement in 1627, the quarrels rekindled, resulting "inter alia" in the Siege of Dorsten and culminating in a series of open battles from 1645, when the Kassel Landgravine Amalie Elisabeth besieged Marburg.The conflict was finally settled on the eve of the 1648 Peace of Westphalia, more than eighty years after the division of the estates.