The Prussian uprisings were two major and three smaller uprisings by the Prussians, one of the Baltic tribes, against the Teutonic Knights that took place in the 13th century during the Prussian Crusade. The crusading military order, supported by the Popes and Christian Europe, sought to conquer and convert pagan Prussians. In the first ten years of the crusade five of the seven major Prussian clans fell under control of the less numerous Teutonic Knights. However, Prussians rose against their conquerors on five occasions.