HARO, Gonzalo Lopez de, Spanish navigator, born in Corcina, Spain, in 1734; died in Acapulco, or in Vera Cruz, Mexico, in 1796. He settled early in New Spain, acquired a reputation as a skilful pilot on the Pacific coast, and in 1788 was appointed by the viceroy, Flores, chief pilot of the expedition to the northwest, which left San Bias on 8 March, consisting of the frigate "Princesa" and the brig "San Carlos," under the command of Esteban Martinez. On 23 June they passed the volcano of Miranda in eruption, and after parting company with the other vessel, in a storm, Haro discovered, on 30 June, a Russian establishment formed by the crew of the "Tschernikoff," who had been shipwrecked in 1746. Bearing toward Trinity island, he met his convoy again, on 2 July, and they touched at the island of Kodiak and the Schumagin islands, and discovered, on 16 July, the Unimok volcano, landing on 3 August at Ounalaska. They sailed again on 24 August, and arrived in San Blas on 5 December, 1788. In February, 1789, Haro was sent again with the same vessels with orders to take possession of Nootka in the name of the king of Spain, and did so on 5 May. On 3 July the English brig "Argonaut" entered the port, with the intention of forming an establishment, and Haro confiscated the vessel and arrested the master, Colnet. It established a factory and trading post there, but, not finding any inducement to winter, he sailed on 31 October, and entered San Blas, 6 December, 1789. He wrote a description of his two voyages, the manuscript of which is preserved among the archives at Mexico. The authority of Haro's observations was accepted in the treaty of April, 1828, between the United States and Russia.