From The New York Times:
Her friends called her Millie. The future pope called her Ma. Mildred Prevost, whose youngest son, Robert, would one day take the name Pope Leo XIV, cut her own extraordinary path of ambition, talent and religious devotion through her hometown of Chicago.
Born Mildred Agnes Martinez, she earned a Bachelor of Science degree in education in 1947 and attended graduate school at DePaul University, an academic path that was unusual for women at that time. She waited until she was in her mid-30s, Cook County records show, to marry Louis Prevost, who was eight years her junior. Mrs. Prevost was in her late 30s and early 40s when she had children, three boys born in a span of just over four years. Robert Prevost [the youngest] spent his childhood in the Chicago suburb of Dolton, immersed in the Catholic culture that revolved around the family parish, St. Mary of the Assumption, on the city’s South Side.