Barons of Javari Barões de Javari Created by Pedro II, Emperor of Brazil First holder João Alves Loureiro, 1st baron of Javari * 1812 Records #1 Holders Family filter On/Off 1 João Alves Loureiro, 1st baron of Javari * 1812 Sources Nobreza de Portugal e Brasil - 3 vols-vol. 3-pg. 635 Corrections and Updates To suggest a correction or an update. Click Here