São Pedro is a municipality in the state of São Paulo in Brazil. The population is of 35,980 in an area of 611.278 km. The brothers Joaqu…São Pedro is a municipality in the state of São Paulo in Brazil. The population is of 35,980 in an area of 611.278 km. The brothers Joaquim, José and Luiz Teixeira de Barros, who came from Itu, bought the Pinheiros Sesmaria where São Pedro is today. They brought with them: slaves, employees and family members. The Picadão, a road that led from São Paulo to Cuiabá, passed through this same area and where the historic center is today was the so-called Pouso do Pidadão, which was looked after by the cattle driver Floriano de Costa Pereira, known as Florianão.