INHAUMA, Joaquin Jose Ignacio de Barros (een-yah-oo'-mah), Viscount of, Brazilian naval officer, born in Lisbon, Portugal, 30 July, 1808; died in Rio Janeiro, 8 March, 1868. In 1810 his parents settled in Brazil, where he studied at the naval academy, was graduated in 1822, entered the navy as a volunteer, and in 1823 was promoted midshipman. In 1824-'5 he served against the revolutions of Pernambuco, Ceara, and Maranhao, and in 1826 in the campaign in Uruguay, where he ran the gantlet of nineteen blockading ships in an open boat to reach the Brazilian squadron, and returned with re-enforcements and ammunition. In 1827 he was shipwrecked in the corvette "Duqueza de Goyaz" in the expedition against Patagonia, taken prisoner on the coast, and sent with eighty other Brazilians to Buenos Ayres" but on the voyage they revolted under Barros's leadership, overpowered the guard, and, eluding the men-of-war of the convoy, arrived in safety at Montevideo on 29 August he served during the revolutions of 1831 in Rio Janeiro, of 1836 in Maranhao, and of 1837 in Bahia, and was promoted commander. In 1841 he was appointed inspector of the arsenal of Rio Grande do Sul, and defeated the rebels in that city. He was promoted captain of a frigate in 1844, and in 1846 sent to England to construct the man-of-war "Constituicao." In 1849 he obtained the rank of post-captain, and in 1850 was appointed inspector-general of the dockyards of Rio Janeiro, where he superintended the construction of several men-of-war. He was promoted commodore in 1852, contre-admiral in 1856, in 1858 a member of the supreme naval council, and in 1861 minister of the navy. During the ravages of the cholera in Rio Janeiro in 1854 he personally carried help from door to door. During the war with Paraguay he was appointed commander-in-chief of the Brazilian naval squadron, and left for the seat of war in December, 1866, re-relying his promotion to vice-admiral in January, 1867. On 15 August he bombarded Curupaity, broke through the enemy's obstructions on board the iron-clad "Brazil," sinking several torpedo-boats and iron-clads, and on 17 September was rewarded by the title of Baron of Inhauma. He was promoted admiral in January, 1868, and in February bombarded Humaita, Timbo, and Tebicuary, and forced the passage of Angustura, which had been reputed impossible, directing the operations personally from the bridge of the "Belmonte." But he was attacked by a malignant fever, and was taken to Rio Janeiro, where he died, a few days after receiving the title of Viscount of Inhauma.