PEREZ DE URDININEA, Jose Maria, Bolivian soldier, born in La Paz in 1782; died there in 1865. He studied in the seminaries of La Paz and Chuquisaca, and when upper Peru was invaded in 1810 by the Argentine army he entered the service with the patriots. Afterward he served under San Martin, and was about to follow the latter to Peru in 1820 when he was appointed by the province of Cuyo commander-in-chief to resist an invasion. He was commissioned by San Martin to raise an auxiliary army in Cuyo, to operate against upper Peru, but when he at last entered the latter province the battle of Ayacucho had already decided the cause of independence. During the invasion by the Peruvian army in 1828 he was president of the cabinet and general-in-chief, but he afterward retired into private life. In 1838 General Santa Cruz called him again into service during the Chilian invasion, and he was chief of cavalry in the battle of Yungai, 20 January, 1839. He was minister of war and president of the council in 1841-'7, and from 1855 till 1857 minister of the interior.