 At that time they probably developed a survival agreement to guarantee mutual inheritance in the event of the recovery of Kraków.The occasion of this congress may have also marked the marriage of Władysław the Short with Jadwiga, the daughter of Bolesław the Pious, uncle of Przemysł II.One year later (1294), it was already necessary to revise the plans approved in Kalisz, as Casimir II was killed while fighting against the Lithuanians.