 By 885, the two main patrons for the missionaries, Rastislav of Moravia of Great Moravia and Prince Koceľ of Lower Pannonia, as well as Cyril and Methodius had died, and the pressure from the German Church became increasingly more hostile.After a brief period of imprisonment due to the ongoing conflict with the German clerics, Naum, together with some of the missionaries headed to Bulgaria.In 886 the governor of Belgrade, then in Bulgaria, welcomed the disciples of Cyril and Methodius.