Saint Francis Xavier (1506 – 1552) was a missionary and was co-founder of the Society of Jesus.
He was a student of Saint Ignatius Loyola and one of the first seven Jesuits who dedicated themselves to the service of God at Montmartre in 1534. He led an extensive mission into Asia, mainly in the Asian Portuguese Empire of the time. He was influential in the spreading and upkeep of Catholicism most notably in India, but also ventured into Japan, Borneo, the Moluccas, and other areas which had thus far not been visited by Christian missionaries. He died in China...
He is said to have converted more people than anyone else has done since Saint Paul. By his compromises in India with the Christians of St. Thomas, he developed the Jesuit missionary methods along lines that subsequently became a successful blueprint for his order to follow. His efforts left a significant impression upon the missionary history of India and, as one of the first Jesuit missionaries to the East Indies, his work is of fundamental significance to Christians in the propagation of Christianity in China and Japan. India still has numerous Jesuit missions, and many more schools. There has been less of an impact in Japan. Following the persecutions of Daimyo Toyotomi Hideyoshi and the subsequent closing of Japan to foreigners, the Christians of Japan were forced to go underground and developed an independent Christian culture.
Pope Benedict XVI said of both Ignatius of Loyola and Francis Xavier: "not only their history which was interwoven for many years from Paris and Rome, but a unique desire — a unique passion, it could be said — moved and sustained them through different human events: the passion to give to God-Trinity a glory always greater and to work for the proclamation of the Gospel of Christ to the peoples who had been ignored."