Abtei Prüm
Whether Mürlenbach belonged to Prüm Abbey as long ago as the Early Middle Ages, which would have put it close to Carolingian royalty, is something that simply cannot be confirmed. Nonetheless, the village, and the castle, too, did indeed belong to Prüm Abbey in the High Middle Ages, when the castle enjoyed importance both as a border fortification and a safe haven for the Abbey in times of retreat.