Paraná, Entre Ríos
He was born in Paraná, Entre Ríos Province, Argentina on 31 March 1856 and baptised on 3 April 1856 as José Mariano Benjamín Zubiaur Pujato at the Cathedral Basilica of Our Lady of the Rosary. His parents were Mariano Zubiaur and Dolores Pujato. Zubiaur completed his secondary education at the Concepción del Uruguay College. In 1877 he was promoter and first president of the Educationist Association "The Fraternity", composed by students of the college.