 In 1594 Zamoyski once again failed to stop a Tatar incursion in the southern borders . The next year was much more successful , as in Moldavia in 1595 he was victorious in the Battle of Cecora , and helped hospodar Ieremia Movilă ( Jeremi Mohyła ) gain the throne . In 1600 he fought against Michael the Brave ( Michał Waleczny , Mihai Viteazul ) , hospodar of Wallachia and the new Prince of Transylvania , who had conquered Moldavia a few months earlier . He defeated him under Bukova ( Bucovu ) and restored Ieremia to the throne . He also helped his brother , Simion Movilă to become brief ruler of Wallachia , thus spreading the influence of the Commonwealth to the Central Danube . 
