WILLIAMS-REBOLLED0, Juan, Chilian naval officer, born in Curacavi, province of Santiako, in 1826. His father was a companion of Admiral Cochrane. The son entered the naval service of his country, and at the opening of the war against Spain had obtained the rank of captain, and was in command of the corvette "Esmeralda." He was at anchor in the port of Papudo on 26 November, 1865, when the Spanish gun-boat "Covadongn" passed with despatches, and, after a short chase and half an hour's engagement, Williams captured her with about 110 men. For this victory he was raised to the rank of post-captain, and presented by the people with a sword of honor. He was later a member of the municipality of Valparaiso and elected to congress. When the war against Peru and Bolivia began, he commanded the Chilian fleet as rear-admiral, and on 29 March, 1879, occupied the Bolivian ports of Cobija and Tocopilla, establishing in April the blockade of Iquique with his flagship, the iron-clad " Blanco Encalada," and other vessels of the Squadron. But after the destruction of the "Esmeralda" by the "Huascar," and the successful cruise of the Peruvian fleet, great discontent arose in Chili with the inactivity of their powerful squadron. According to Admiral Williams, this was caused by the condition of the hot-toms of his ships and their defective machinery, so that he was unable to cope in speed with the Peruvian vessels, owing to this and on account of ill health, Williams resigned in September, 1880, and was succeeded by Admiral Galvarino Riveros.