John of God, O.H. (March 8, 1495 – March 8, 1550) (Spanish: Juan de Dios and Portuguese: João de Deus) was a Portuguese-born soldier turned health-care worker in Spain, whose followers later formed the Brothers Hospitallers of St. John of God, a worldwide Catholic religious institute dedicated to the care of the poor sick and those suffering from mental disorders. He has been canonized by the Catholic Church, and is considered one of Spain's leading religious figures.
The first biography of John of God was written by Francisco de Castro, the chaplain at John of God's hospital in Granada, Spain. He drew from his personal knowledge of John as a young man and also used material gathered from eyewitnesses and contemporaries of his subject. It was published at the express wish of the Archbishop of Granada, who gave financial backing to its publication. Castro began writing in 1579, twenty-nine years after John of God's death, but he did not live to see it published, for he died soon after completing the work. His mother, Catalina de Castro, had the book published in 1585.
João Teixeira de Faria (born June 24, 1942), known also as João de Deus ("John of God"), is said to be a medium and psychic surgeon. He is based in Abadiânia, Brazil, where he runs the Casa de Dom Inácio de Loyola, a spiritual healing center where he sees thousands of visitors every week from all over the world.
João Teixeira de Faria was born in Cachoeira da Fumaça, Goiás (now Cachoeira de Goiás). There are no records of his early life and De Faria has not provided precise details. His best known biography is The Miracle Man, written by Robert Pellegrino-Estrich, who runs tours to Abadiânia. De Faria has no medical training and describes himself as a 'simple farmer.' He completed two years of education and spent a number of years travelling from village to village in the states of Goias and Minas Gerais.
De Faria says he was told by his spirit guides that he must expand his work to reach more people and spiritist medium Chico Xavier told him he should go to the small Goiás town of Abadiânia to fulfill his healing mission. Around 1978, when João first performed healings there, he just sat outdoors in a chair near the main road where people began to arrive seeking cures for their various illnesses and conditions. Gradually the numbers increased to thousands per day and he developed his centre, Casa de Dom Inácio de Loyola. The Casa de Dom Inácio de Loyola has since been visited by millions of people seeking healing. He also owns a nearby cattle ranch, which covers about 1,000 acres and is valued over 2 million reias.