Career

Born in Alava, Zenzano was married to Agripina de Mansilla Ruiz, born in Cádiz, descendant of Gonzalo Fernández de Mansilla born 1432 in Mansilla. In 1739 Joseph Zenzano, served as Minister of the Casa de la Contratación, being commissioned to ascertain the alleged excesses occurred at the entrance of the ships to port of Buenos Aires. He served as Royal Notary, public and of government during the Viceroyalty of Rio de la Plata.