Juan del Castillo

The work of Juan del Castillo is part of the vast project of the Jesuit reductions of Paraguay, where evangelization and human advancement went hand in hand. He first served in several missions in the region, including San Nicolás in Piratiní, before being sent to support the foundation undertaken by Saint Roque González. On August 15, 1628, the reduction of Asunción del Ijuí (Yjuhí) was established in a territory that is now Brazilian (Rio Grande do Sul), and Juan del Castillo remained there as the person in charge. This settlement aroused the hostility of indigenous chiefs and sorcerers attached to ancient practices, who saw in Christian preaching and the abandonment of traditional customs a threat to their authority. The cacique and shaman Ñezú (Nheçu) then organized the elimination of the missionaries. On November 15, 1628, Roque González and Alfonso Rodríguez were killed at Caaró; two days later, on November 17, it was Juan del Castillo who was seized and put to death at Ijuí. Together, they are considered the protomartyrs of the reductions and of the Río de la Plata.

The reputation for holiness of Juan del Castillo rests on the testimony of his missionary life and the circumstances of his death. The Jesuits of the Río de la Plata are described as tireless in preaching and austere in their personal lives, animated by the love of Christ and the indigenous peoples they served. Castillo shares this profile: as a young priest, he accepted the rigors of an isolated and exposed post, serving Guarani communities that had been recently evangelized. His martyrdom is recognized as having been accomplished in odium fidei, that is to say, out of hatred for the faith, as his murderers explicitly targeted the missionaries and the religion they proclaimed. Tradition reports that he invoked the names of Jesus and Mary at the moment of his death. This fidelity unto the gift of his life, in full obedience to his Jesuit vocation, establishes his renown for holiness, shared with his two companions honored as a single group of martyrs.

The martyrdom of Juan del Castillo was recognized by the Church jointly with that of his two companions. Pope Pius XI beatified them on January 28, 1934. More than half a century later, Pope John Paul II canonized them on May 16, 1988, during his apostolic journey to Paraguay, in a celebration held in Asunción. The three new saints—Roque González de Santa Cruz, Alfonso Rodríguez, and Juan del Castillo—thus became the first saints of Paraguay and the Guaraní reductions. As it was a recognized martyrdom, the cause did not require proof of a prior miracle according to the applicable canonical procedure. The liturgical memorial of Juan del Castillo is set for November 17, the day of his martyrdom; some calendars group the three martyrs around this date. The celebration of their canonization by a pope on Paraguayan soil, the land of their apostolate, underscored the significance of their witness for the Church in Latin America.

Juan del Castillo is honored as one of the protomartyrs of the Paraguay reductions, a unique missionary experiment that left a lasting mark on the history of evangelization in South America. His memory is attached to the Guaraní territories of the Río de la Plata, now divided between Paraguay, Argentina, and Brazil, where the remains of the reductions recall this epic. In Spain, his hometown of Belmonte and the Cuenca region venerate him as a son of the land, and several Spanish dioceses include his figure in their sanctoral. The Society of Jesus counts him among its martyr saints and maintains his memory on a universal scale. His example, along with that of his companions, continues to be invoked as a testimony of missionary fidelity and the defense of indigenous peoples, a legacy that the Church in Latin America continues to claim. His feast day, November 17, perpetuates the memory of his sacrifice.