Baron of Rio Preto is a Brazilian noble title created by Emperor Pedro II of Brazil, by decree of December 6, 1854, in favor of Domingos Custódio Guimarães.
Holders
• Domingos Custódio Guimarães (1802–1868) – first viscount of Rio Preto; • Domingos Custódio Guimarães Filho (?–1876) – second baron of Rio Preto. == References ==