St. Faustina Kowalska (1905-1938)

Born Helena Kowalska in Poland, she entered the Congregation of the Sisters of Our Lady of Mercy and took the name Sister Mary Faustina. She lived in the Congregation for thirteen years and lived in several religious houses. She worked as a cook, gardener and porter. Externally, nothing revealed her rich mystical interior life, but she received extraordinary spiritual gifts such as revelations, visions, hidden stigmata, participation in the Passion of the Lord, the gift of bilocation, the reading of human souls, and the gift of prophecy. She kept a diary at the request of her confessors, the overriding theme of which the Divine Mercy. It has been translated into many languages. Sister Mary Faustina, consumed by tuberculosis and by innumerable sufferings which she accepted as a voluntary sacrifice for sinners, died in Krakow at age 33 October 5, 1938 with a reputation for spiritual maturity. Her reputation for holiness grew. In the years 1965-67, the investigative Process into her life and heroic virtues was undertaken in Krakow and in the year 1968, the Beatification Process was initiated in Rome. The latter came to an end in 1993. She was canonized in 2000. Youtube has a six-part biography of St. Faustina:

(From the Vatican website)