Pope Pius canonized several persons with a very strong Marian faith and spirituality – and sometimes visions – such as Louis de Montfort, Peter Chanel, Jeanne de Lestonnac, Pope Pius X, Catherine Labouré, Anthony Mary Claret, and Gemma Galgani.
In the Church of San Nicolás, of which the Pope Callixtus III was rector before becoming Pope, in the door that overlooks to the square of San Nicolás, is remembered with tiles the prediction of Saint Vincent Ferrer according to which Alfonso de Borja would become Pope and then will canonize him.
The parish houses large devotions to Our Lady of Guadalupe (Sacred Heart hosts her feast day December 12 for the entire archdiocese) and Óscar Romero, the slain Archbishop of San Salvador, though the movement to beatify and possibly canonize Romero appears stalled.
According to island historians Charles Leng and William T. Davis, it was only after another prominent businessman, Erastus Wiman, promised to "canonize" him in the town's name that Law agreed to relinquish the land rights for a ferry terminal.