SEGUROLA, Sebastian de (say-goo-ro'-lah), Spanish-American soldier, born in Guipuzcoa, Spain, 27 January, 1740; died in La Paz, Bolivia, 2 October. 1789. After pursuing the studies then necessary for the career of arms, he was appointed a cadet in the regiment of royal guards in 1758. In 1776 he sailed from Cadiz to take part in the expedition sent by the viceroy of Buenos Ayres to check the incursions of the Portuguese on Spanish territory. He was decorated with the cross of Calatrava for his services, and appointed corregidor over the province of Larecaja. He took part in the campaign on the Rio de la Plata, and, on the conclusion of peace, fixed his residence in Sorata, the principal town of his government of Larecaja. Here he received intelligence of the rebellion of Jose Gabriel Tupac-Amaru, cacique of Tungasuca, which extended to several provinces, and he was ordered to take command of the city of La Paz and the neighboring provinces on 1 January, 1781. The siege of La Paz was the most memorable incident in the rebellion, and the city's safety was entirely due to his firmness and energy. In 1782 he was raised to the rank of brigadier, and appointed governor of the city, which post he held until his death. His " Diario de los sucesos del cerco de la ciudad de La Paz en 1781 hasta la total pacificacion de la rebelion general del Pere," printed in the first volume of the " Archivo Boliviano " (Paris, 1871), gives a minute account of the incidents of the siege and the subsequent expeditions against the hostile tribes, and contains interesting letters from the inca and other Indian chiefs.