Francis Xavier was canonized by Gregory XV on March 12, 1622. We do not know when he was declared as the patron saint of Roman Catholic missionaries in foreign lands but it may have happened at the same time as his canonization, or soon afterwards.
Saint Francis Xavier is commonly referred to as the patron saint of missionaries for his extensive missionary work in Asia during the 16th century. He is known for his dedication to spreading Christianity and his efforts to establish missions in various countries.
St. Francis Xavier is considered the patron saint of missions in the Catholic faith. He was a missionary in Asia during the 16th century and played a significant role in spreading Christianity in the region.
Patron of Australia is St. Francis Xavier
Saint Francis Xavier is often considered the patron saint of missionaries and of learning languages because of his work in spreading Christianity to different parts of the world and his ability to quickly learn new languages to communicate with the locals.
Blessed Francis Seelos died on October 4, 1867 - the anniversary dae of the death of his patron saint - Saint Francis of Assisi.
Patron saints of China: •Francis Xavier •Joseph •Virgin of Sheshan
The name means "Bright New House" and was originally borne in honor of St. Francis Xavier (1506 - 52), a famous Spanish missionary to Japan and the East Indies and the patron saint of missionaries in foreign lands
They have a sword saint (Kensei - Miyamoto Musashi) so I would assume they have other saints.
Patrons of China •Francis Xavier •Joseph •Virgin of Sheshan
St. Francis Xavier is often referred to as the patron saint of missions. He was a pioneering Catholic missionary who played a significant role in spreading Christianity in Asia during the 16th century.
patrons of Australia •Francis Xavier •Mary Mackillop •Our Lady Help of Christians •Therese of Lisieux
The patron saints of foreign missions are: •Francis Xavier •Infant Jesus of Prague •Peter Claver •Therese of Lisieux