Berenguer III of Barcelona was a prominent count of Barcelona who ruled from 1035 until his death in 1076. He was part of the House of Barcelona and played a significant role in the expansion of the county's territory. His reign was marked by efforts to consolidate power and strengthen the region against external threats. During his rule, Berenguer III focused on the development of the Catalan region, promoting agriculture and trade. He also engaged in military campaigns to reclaim lands from the Muslim territories in the south, contributing to the gradual Christian reconquest of the Iberian Peninsula.