Prince Bolesław III Wrymouth defeated the King of Germany Henry V in the 1109 Battle of Hundsfeld, writes Gallus Anonymus in his 1118 chronicle.[29] In 1138, Poland fragmented into several smaller duchies when Bolesław divided his lands among his sons. In 1226, Konrad I of Masovia, one of the regional Piast dukes, invited the Teutonic Knights to help him fight the Baltic Prussian pagans; a decision which led to centuries of warfare with the Knights. Elements of what is called now human rights may be found in early times of the Polish state. The Statute of Kalisz or the General Charter of Jewish Liberties (issued in 1264) introduced numerous right for the Jews in Poland, leading to a nearly autonomous "nation within a nation".