 The provost of the Collegiate Church administered one of the archdiaconates (a medieval organizational form similar to today's diaconates) of the Archbishopric of Mainz.The current church building dates from the late medieval era; construction of the main area of the church began in about 1267 and was completed in 1340.The successional building kept the guidelines of the floor plan of the original Willigis building and with it the design as a double choir church.