Saint John Berchmans, SJ (Dutch: Jan Berchmans) (†1621) was a Belgian Jesuit scholastic and is a saint in the Roman Catholic Church. Berchmans was declared Blessed in 1865, and canonized in 1888. He is the patron saint of altar servers. The Saint is currently inscribed in the 2004 official edition of the Catholic Church's Martyrologium Romanum (p. 451) on 13 August, the date of his dies natalis (heavenly birthday). He is celebrated by the Society of Jesus on Nov. 16.