Saint Oleguer of Barcelona was a prominent figure in the early 11th century, serving as the Bishop of Barcelona. He is known for his efforts in promoting Christianity in the region and for his role in the development of the Catalan church. Oleguer was also involved in the political landscape of his time, supporting the Count of Barcelona in various endeavors. Oleguer is often remembered for his dedication to the poor and his commitment to social justice. His legacy includes the establishment of several religious institutions, which contributed to the spiritual and cultural growth of Barcelona. He is celebrated as a saint in the Roman Catholic Church, with his feast day observed on March 12.