About Antonia Brenner
Mother Antonia Brenner, better known as Mother Antonia (Spanish: Madre Antonia; December 1, 1926 – October 17, 2013) was an American religious sister and activist who chose to reside and care for inmates at the notorious maximum-security La Mesa Prison in Tijuana, Mexico. As a result of her work, she founded a new community called the Eudist Servants of the 11th Hour. As an older, divorced woman, Clarke wasn't accepted as a candidate by a religious order or congregation, so she founded an institute for those in her situation: the Eudist Servants of the Eleventh Hour.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.