No written sources about the chief sculptor-architect of this workshop who was named after his main work in Naumburg. However, there is a general consensus with regard to the itinerary of the building workshop from Mainz via Naumburg to Meissen. An assumption relying on the analysis of historic sources is based on the idea that the milestones of his creative work are marked by the completion of the choir screen in Mainz in 1239, the west choir in Naumburg in 1249/50 and the work of the building workshop in Meissen from 1250 up until prior to 1268.