His family had moved to America when his father began a bureaucratic career as a Crime Prosecutor of the Real Audiencia of Buenos Aires in the Viceroyalty of the Río de la Plata in 1787,[1] later holding the same position in the Captaincy General of Chile where in 1799 his son Ramón was born.

[2] In 1820 he served as captain of the Numancia battalion; Together with the Venezuelan captain Tomás de Heres [es] he led the arrest of Colonel Ruperto Delgado[3] and then handed this body over to the patriot side on the Huaura bridge, then becoming part of the United Liberating Army of Peru under the command of José de San Martín where he quickly rose to the rank of colonel.

This event, one of the most decisive of the Liberating Expedition, allowed San Martín to increase his force with a veteran battalion and weakened the royalists to the same extent, who finally abandoned Lima.

...in August 1860, when I was in Brussels, an elderly but well-mannered gentleman introduced himself to me and, greeting me with the nickname "countryman" (paisano), told me that he was General Don Ramón Herrera, who was Chilean by birth and that He wanted to talk to me to ask me news about this country and his relatives.

I did not deal with him again but then I learned that he owned valuable urban properties in Valparaíso, which he had acquired to give an advantageous and secure placement to his fortune.Away from public life, he would die in Florence, Italy when his native country and the other two he had served faithfully were still fighting in the War of the Pacific.