The city of Rio Grande was founded in 1737 by Brigadier General José da Silva Pais and his men to defend Portugal's territory. The Jesus Maria e José Fort was constructed, which was built on the site of the future city. The fort was transformed into a town when colonists from the Azores and Madeira arrived in the 1750s. In 1751, the growing colony became the Village of Rio Grande de São Pedro. In 1760, Rio Grande de São Pedro, which was formerly governed from Santa Catarina became its own captaincy, a type of administrative division.
