Bolesław II Wrymouth was a Polish prince who ruled from 1107 to 1138. He was a member of the Piast dynasty and is known for his efforts to strengthen the Polish state. His reign was marked by military campaigns and the consolidation of power, which helped to expand the territory of Poland. Bolesław II was also notable for his support of the Catholic Church, promoting Christianity in the region. He established several monasteries and churches, contributing to the spread of religious influence in Poland. His legacy includes the development of a more unified Polish identity during a time of fragmentation.