Since the transfer of the patriarchal residence to Udine the Venetians had never lived in peace with the patriarchate, of whose imperial favour and tendencies they were jealous. In the 15th century the state also suffered a series of inner strifes between Cividale and Udine. In 1411 this turned into a war which was to mark the end of the Patriarchate, Cividale having received support from most of the Friulian communes, the da Carrara of Padua, the Emperor and the King of Hungary, while the latter was backed by the Venetians. In the December of that year the imperial army captured Udine and, in the following January, Louis of Teck was created Patriarch in the city's cathedral. On 23 July 1419 the Venetians conquered Cividale and prepared to do the same with Udine. The city fell on 7 June 1420 after a long siege. Soon afterwards Gemona, San Daniele, Venzone and Tolmezzo followed.