Henry II the Pious
Puresh secretly met with the High Duke of Poland, Henry II the Pious, on 8 April 1241, one day before the Battle of Legnica, and they agreed that the Moksha soldiers would join forces with the troops of the Silesia and Greater Poland. Sübötäi uncovered the plot - and Puresh, his son and many Moksha warriors were killed while they slept after midnight on 9 April 1241.