ヘッセン＝ダルムシュタット方伯領
In 884 Rosbach was annected to the Fulda monastery due to a gift by the Emperor Charles the Fat. In 1663, Rosbach received town privileges under the control of the Landgraviate of Hesse-Darmstadt, the Count of Nassau and the Electorate and Archbishopric of Trier.