When Juan Francisco Gortari was born on 29 March 1856, in Oronoz, Baztán, Navarre, Spain, his father, Jose Manuel Gortari, was 33 and his mother, Feliciana Francisca Ibarra Arrechea, was 32. He married Francisca Antonio Eusebia Tellechea on 25 January 1890, in Buenos Aires, Argentina. They were the parents of at least 5 sons and 6 daughters. He died on 5 January 1925, in Carlos Casares, Carlos Casares, Buenos Aires, Argentina, at the age of 68.