Career
Before completing his studies he volunteered for the Guarani missions of Paraguay, and sailed from Lisbon in company with the veteran missionary, Father Juan Romero, in 1610, continuing his studies on the voyage. The rest of his life was spent at the Guarani mission town of Guarambare or with the Itatines, whose language he studied and reduced to dictionary form. Attending the sick throughout a contagious epidemic, he himself fell ill and died.