San Pedro de Ycuamandyyú is a city and district in Paraguay. It is the capital of the department of San Pedro. The conquistador Aleixo Gar…San Pedro de Ycuamandyyú is a city and district in Paraguay. It is the capital of the department of San Pedro. The conquistador Aleixo Garcia, the first European to cross Paraguay and reach the Inca empire in 1524, is believed to have been killed near San Pedro on his return.