Ocampo''s wealth and background as a lawyer and member of the Malolos Congress paved the way for a career in politics. He served as resident commissioner in Washington with Benito Legarda from 1907 to 1909, and representative to the National Assembly from 1909 to 1912. He went into the real-estate business after quitting politics. Ocampo belonged to an old family from Quiapo. This lawyer-politician from Quiapo, Manila, was the son of Andres and Macaria de Leon-Ocampo; born on January 25, 1853, and received his education at the San Juan de Letran and at the U.S.T. where he obtained his Licenciado en Jurisprudencia in 1882. Six years later, in 1888, he was appointed relator of the Manila Audencia, promotor fiscal in the court of first instance of Tondo the following year, and simultaneously defensor deoficio and secretary of the Colegio de Abogados in 1890. Although he did not participate in the 1896 revolution, he served as a member of the Malolos Congress in 1898, representing the sub-provinces Principe, Lepanto, Bontoc and Infanta. He was elected Secretary of the Congress and a member of the committee that drafted the constitution. Shortly thereafter he was named professor of civil law and political economy at the Universidad Cientifico-Literaria. In 1899 he edited the nationalistic newspaper, La Patria, wherer he expressed his controversial views on vital problems and public issues. His daring exposes and attacks against the Americans caused his deportation to Guam in 1901, upon order of General Arthur MacArthur, together with other anti-Americans like Mabini, Maximo Hizon, Pio del Pilar, Artemio Ricarte and others. He remained in Guam for almost two years and returned to the Philippines after he took the oath of allegiance to the U.S.A. in 1902. In 1907 he and Benito Legarda were elected Resident Commissioners to Washington, D.C., he stayed there for two years. Upon his return in 1909 he was elected to the Second Philippine Legislature. He retired from politics after his term and devoted his time to real estate and other business purssuits. He died of pulmonary disease on February 5, 1925. He was married to the former Juana Zamora.