Henry II the Pious
The death of Henry II the Pious in the Battle of Legnica (1241) put in jeopardy Władysław's rule over Kalisz and Wieluń; the definite loss of this lands appeared to be only a matter of time, thanks to the pretensions of Przemysł I of Greater Poland, who wanted to recover these lands. Eventually, Władysław lost Kalisz in 1244 and Wieluń five years later in 1249.