Career
In January 1660, Esparza arrival at the port of Buenos Aires, on the ship "Nuestra Señora de Aranzazu". He had been recruited as soldier in San Sebastian, place from where the expedition led by Martin de Telleria, departed to Buenos Aires. The mission of Telleria was to bring weapons and two infantry companies to reinforce the Fort of City.
Alejo was born 1638 in Lumbier, Navarre, the son of Pedro de Esparza and Colomba de Garro, daughter or relative of León de Garro and Inés de Coloma.