Henryk IV Probus
According to Jan Długosz, on 14 June 1287 some Greater Poland knights and (as was suggested by the chronicler), without the knowledge of his ruler, made a surprise attack to Ołobok, won the castle and returned the district to Greater Poland. Henryk IV Probus decided to not respond with any armed conflict and accepted the loss; in unknown circumstances, around this time Przemysł II also regained Wieluń (lost in 1281). It can be assumed that the attitude of the Duke of Wrocław was part of the concessions associated with his plans to obtain the throne of Kraków, and wanted in this way to ensure that benevolent neutrality of the Duke of Greater Poland.