 A 13th-century legend, based on a misreading of an older text, tells the story of Saint Monulph and Saint Gondulph rising from their graves to attend the consecration of Aachen Cathedral in 1139.Both saints are credited with efforts of rebuilding the destroyed city of Tongeren.Another tradition holds that Monulph founded the chapel of Cosmas and Damian in 588 at the river confluence of Meuse and Ourthe, in a place that would later become the city of Liège.