At the Battle of Trenčín (Hungarian "Trencsén", German "Trentschin", Latin "Trentsinium", Comitatus Trentsiniensis, today in Slovakia), on 3 August 1708 Rákóczi's horse stumbled, and he fell to the ground, which knocked him unconscious. The kuruc forces thought him dead and fled. This defeat was fatal for the uprising. Numerous Kuruc leaders transferred their allegiance to the Emperor, hoping for clemency. Rákóczi's forces became restricted to the area around Munkács and Szabolcs County. Not trusting the word of János Pálffy, who was the Emperor's envoy charged with negotiations with the rebels, the Prince left the Kingdom of Hungary for Poland on 21 February 1711.