Agnes Gonxha Bojaxhiu, who adopted the name Mother Teresa, was born in 1910 in Skopje, Macedonia.
At the age of 18, she left her parental home and joined the Sisters of Loreto, an Irish community of nuns with missions in India. She taught at St. Mary’s High School in Calcutta from 1931.
Mother Teresa was sent for her annual retreat to the Loreto Convent in Darjeeling.
During this train journey, on Sept. 10, 1946, she had a mystical encounter with Christ. In this encounter, which she later referred to as the "call within a call," Christ urged her to give up all and follow him into the slums to serve him and the poorest of the poor.
She died in 1997 and was beatified by the Vatican in 2003 and canonized on Sept. 4, 2016, for her dedicated service to the poorest of the poor.
The year 2023 marks the 113th year of her birth.