Saint Francis Xavier, SJ, born Francisco de Jasso y Azpilicueta (7 April 1506 – 3 December 1552), was a Navarrese Basque Roman Catholic missionary, born in Xavier, Kingdom of Navarre (now part of Spain), and a co-founder of the Society of Jesus. He was a 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.