Lieutenant-general Juan Esteban Pedernera married the former Rosa Juana Heredia in Callao on September 23, 1823; she was born in Perú, in 1805, and died in Buenos Aires, on August 26, 1886.
He then was elected Vice-President to President of the Argentine ConfederationSantiago Derqui, and served from 1860 until 1861, when Derqui resigned after the Battle of Pavón. Pedernera then acted as President until the political situation forced the dissolution of the office. In 1882 he was designated Lieutenant General of the Armies of the Republic.
^Veláquez, Luis (1958). Vida de un héroe. Biografía del Brigadier General Juan Esteban Pedernera. Buenos Aires: Ediciones Peuser. Colección Grandes Biografías. p. 524.