Treaty of Meerssen
In the early 9th century, and thus in Charlemagne’s and his successors’ time, the Norath area belonged to the Dukedom of Moselania. After the partition of the Carolingian Empire in the 843 Treaty of Verdun, Norath passed to the Dukedom of Lotharingia, named after Emperor Lothair I. After Lothair II's death, Charles the Bald of France and Louis the German agreed in the 870 Treaty of Meerssen that all the late Lothair's lands on the Moselle's and the Meuse's left bank were to pass to Charles, while all those east of these rivers were to belong to the German Empire.