Baron of Mauá, whose real name was Irineu Evangelista de Sousa, was a prominent figure in 19th-century Brazilian history. He played a significant role in the economic and industrial development of the country. The childhood of Irineu Evangelista de Sousa, better known as Baron of Mauá, is a fascinating and often overlooked chapter in the history of one of Brazil’s most prominent entrepreneurs and visionaries.