Pope Francis will declare Blessed Teresa of Calcutta a saint at the Vatican on September 4, the conclusion of the Year of Mercy jubilee for those engaged in works of mercy. The date was announced during a consistory meeting of the Pope, cardinals and promoters of Causes that formally ends the canonisation process. At the same consistory, the Pope set June 5 as the date for the canonisations of Blessed Stanislaus Papczyński of Poland, founder of the Marian Fathers of the Immaculate Conception, and Blessed Mary Elizabeth Hesselblad of Sweden, who re-founded the Brigittine Sisters. Pope Francis also declared that on October 16 he would celebrate Mass for the canonisations of Argentina’s “gaucho priest”, Blessed José Brochero, and Blessed José Sanchez del Rio, a 14-year-old Mexican boy martyred for refusing to renounce his faith during the Cristero War of the 1920s. Mother Teresa, who ministered to the sick and dying in some of the poorest neighbourhoods in the world, was born to an ethnic Albanian family in Skopje, in present-day Macedonia. She went to India in 1929 as a Sister of Loreto and became an Indian citizen in 1947. She founded the Missionaries of Charity in 1950. Shortly after she died in 1997, St John Paul II waived the usual five-year waiting period and allowed the opening of the process to declare her sainthood. She was beatified in 2003. Fr Brian Kolodiejchuk, the postulator of her sainthood cause, published a book of her letters, Mother Teresa: Come Be My Light. The letters illustrated how, for decades, she experienced what is described as a “dark night of the soul” in Christian spirituality; she felt that God had abandoned her. While the letters shocked some people, others saw them as proof of her steadfast faith.