Cologne City Hall and 1096 were followed by the formation of a "commune" and first municipal structures as a basis for urban autonomy. In order to consolidate their economic and political rights, Cologne burghers established fraternities and trade guilds (most notably the "Richerzeche"). In the 1106 war of succession between Emperor Henry V and his father Emperor Henry IV, they took deliberate opposition to the archbishop, after which they gained benefit in regards to the city's territorial expansion over the following years. As – at the time – one of Europe's busiests trading ports and largest city in Germany, the population of Cologne
William of Cologne kind may be found in museums and various churches in Cologne, Munich, Nuremberg, Frankfurt am Main and Berlin, and there is a plaque to him in the Walhalla temple. William of Cologne William of Cologne ("Wilhelm von Köln" or "Meister Wilhelm") was a medieval German painter active in Cologne and recorded in city charters between 1370 and 1390. He is regarded as the foremost artist of the Cologne School. No paintings can be attributed securely to him by him, though his name is used as a collective term for a series of altarpieces from late in the fourteenth century, whose