The paper is a minor contribution to the debate on the functioning of the system scheduled by the so-called testament of Bolesław Krzywousty several decades after the death of the prince. On the one hand, I will present arguments for the participation of younger brothers in power (e.g. the dating formulae of documents, the denarii of Bolesław Kędzierzawy with feasting brothers). On the other hand, I will point to the manifestations of the senior's strong power and his superiority over the juniors (holding court in the juniors' districts, the tympanum of Jaksa, etc.).