Barons of Rieux Barons de Rieux Records #2 Holders Family filter On/Off Juan de Prat, count of Pradère and baron of Rieux * 1759 Pedro Juan Maria Plácido de Prat y de Zea Bermúdez, count of Pradère e baron of Rieux * 1806 Corrections and Updates To suggest a correction or an update. Click Here