Saint Francis Xavier, S.J. (born Francisco de Jasso y Azpilicueta, 7 April 15063 December 1552), was a Navarrese-Basque Roman Catholic missionary, born in Javier (Xavier in Navarro-Aragonese or Xabier in Basque), Kingdom of Navarre (present-day 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.