St. Francis Xavier Church - Manhattan - was created in 1882.
St. Francis Xavier Church - West Virginia - was created in 1869.
St. Francis Xavier Seminary was created in 1994.
St. Francis Xavier's College was created in 1955.
The diocese of Ontario would have named the parish at the time it was established.
St Francis Xavier College - Canberra - was created in 1976.
St. Francis Xavier Elementary School was created in 1929.
University of Saint Francis Xavier was created on 1624-03-27.
St. Francis Xavier's College - Liverpool - was created on 1842-10-27.
St. Francis Xavier Catholic High School was created in 2009.
St. Francis Xavier University Students' Union was created in 1965.
St. Francis Xavier Secondary School - Mississauga - was created in 1990-09.
That would depend upon in what diocese the St Francis Xavier Church you were asking about is in. He's a popular saint and has many churches named for him. Check out the article on him at Answers.com.