Agnes Gonxha Bojaxhiu was a Nobel Prize laureate who joined the Sisters of Loretto at age 19 and taught at St. Mary's High School in Kolkata, where she realized she wanted to help the poor. With no money, she started an open-air school for homeless children which later became the Missionaries of Charity, through which she received a Nobel Peace Prize in 1979 and the Pope John XXIII Peace Prize in 1971 for her work serving the poor.