FERREYROS, Manuel B. (ferray'eros), Pcruvian statesman, born in Lima in 1793; died there in 1872. He was employed in the treasury offices of the Spanish government in his native City from 1816 till 1821, but, when the viceroy Laserna retired into the interior and independence was proclaimed, 28 June 1821, Ferreyros joined the patriots and soon became active in politics. In 1829, he was elected deputy to the first constituent congress of Peru, appointed secretary by his colleagues, and was conspicuous in opposing the reactionary movement of that year, tending to reestablish the Spanish authority in Lima. In 1825 he represented Peru as envoy extraordinary in Colombia, and in 1830 was minister plenipotentiary to Bolivia. In 1835'8 he strenuously opposed the Peru-Bolivian confederation, and on its disruption on 20 January 1839. he was elected deputy of the new constituent congress of Huancayo, and nominated its president. He was again plenipotentiary to Bolivia in 1840, to the general American congress in 1847, to Chili and New Granada in 1848, to Ecuadot in 1858, and deputy to congress in 1860. In the intervals he occupied several times the ministry of the interior, the treasury and foreign relations; was councilor of state, director general of customs, and for ten years director of public instruction, in which capacity he remodeled the whole system, and introduced valuable reforms in the faculty of philosophy, arts, and law. He also contributed to journals in Lima, and as president of several scientific and literary commissions contributed powerfully to the intellectual development of his country. He was an accomplished linguist and book collector, and left one of the most complete libraries in South America.