Francis Xavier, SJ, born Francisco de Jasso y Azpilicueta (7 April 1506 – 3 December 1552), was a Roman Catholic missionary born in Xavier, Kingdom of Navarre (now part of Spain), and co-founder of the Society of Jesus. He was a study companion of St. Ignatius of Loyola and one of the first seven Jesuits who took vows of poverty and chastity at Montmartre, (Paris) in 1534.
He led an extensive mission into Asia, mainly in the Portuguese Empire of the time. He was influential in evangelization work most notably in India. He also ventured into Japan, Borneo, the Maluku Islands, and other areas which had, until then, not been visited by Christian missionaries. In these areas, being a pioneer and struggling to learn the local languages in the face of opposition, he had less success than he had enjoyed in India. It was a goal of Xavier to extend his missionary preaching to China but he died in Shangchuan Island shortly before of doing so.
Source : Wikipedia