That year he was sent to the Empire of Brazil as minister plenipotentiary to carry out the exchange of ratifications of the Convention on Boundaries & Commerce and River Navigation.

He was a member of the Constituent Congress of 1860 for the province of Anta between July and November 1860[1] during the third government of Ramón Castilla.

[3] In 1860 he was part of the commission in charge of drafting the Penal Codes and Procedures in Criminal Matters.

Together with the overthrown president, he took refuge on the British ship Shear Water, anchored in Callao.

[6][7] At the start of the Pacific War he was accredited as plenipotentiary minister in Buenos Aires, Montevideo and Asunción, between 1880 and 1882.