 It's also believed that the document was inspired by Oda, who wanted to secure the inheritance of her sons (with the Papal protection) in detriment of her stepson Bolesław I.After the death of Mieszko I (25 May 992), Bolesław I began the struggle against his half-brothers for the control over the paternal heritage.According to some historians, the war lasted only a few weeks, and according to others, only finished around 995, when Bolesław I expelled his stepmother and half-brothers from Poland and took control over all Mieszko I's domains.