The Cause for the beatification and canonization of Mother Théodore Guérin was opened in 1909. This long and thorough process of declaring saints in the Roman Catholic Church is a way to make the spiritual legacy of a person known universally. In October 1998, Pope John Paul II bestowed the title "Blessed" on Mother Théodore to signify that the Catholic Church recognizes her as a holy woman, through whose intercession a miracle occurred, worthy of honor and veneration. Pope Benedict XVI has signed a document recognizing a second miracle attributed to her, and her canonization ceremony was held on October 15, 2006.