Irineu Evangelista de Sousa, Viscount of Mauá
At his peak, Sousa controlled eight of the country's ten largest companies (the remaining two were state-owned); his banking interests stretched over to Britain, France, the United States and Argentina.Sousa, who established the modern Banco do Brasil, is credited with financing much of the Brazilian economy activity in the 19th century, particularly in coffee plantation, and with the construction of the first railroads, shipyard and cast iron metalwork in the country.Sousa commissioned the first telegraphic submarine cable connecting South America to Europe, developed commercial transportation via steamboats on the Amazon and Guaíba rivers, and installed the first gas-fueled street lights in the city of Rio de Janeiro, then Brazil's capital.Records show his paternal grandfather, Manuel Jerônimo de Sousa, was the owner of the Arroio Grande sesmaria, that is, a large plot of land given by the Portuguese crown, in 1798.His uncle, José Batista de Carvalho, was the captain and owner of a sailing ship and regularly travelled to India, Portugal and the Brazilian coast, stopping at several of its ports.