Oleguer de Barcelona was a prominent figure in medieval Catalonia, known for his role as a bishop and a political leader. He served as the Bishop of Barcelona from 1102 until his death in 1137. Oleguer was influential in the Christian reconquest of territories from the Moors, contributing to the expansion of the Catalan influence in the region. In addition to his ecclesiastical duties, Oleguer was involved in the governance of Barcelona and played a key role in the establishment of the Catalan identity during a time of significant change. His leadership helped shape the religious and political landscape of medieval Catalonia.