Saint Teresa of Calcutta Jemma 8 years ago The Vatican will anticipate the canonization of Blessed Teresa of Kolkata with this special postage stamp, which will be released Sept. 2, two days before Pope Francis officially declares her a saint. (CNS photo/courtesy Vatican Philatelic and Numismatic Office) See MOTHER-TERESA-STAMP Aug. 5, 2016. Editors; best quality available. Saint Teresa of Calcutta, founder Missionaries of Charity Sisters, canonised to sainthood by Pope Francis on 4 September 2016. Photo: Manfredo Ferrari (1985), Wikimedia Commons On 4 September 2016, Blessed Mother Teresa was declared Saint Teresa of Calcutta at a canonisation Mass presided over by Pope Francis. See stories: Memories of Mother Teresa