She received the Nobel Peace Prize for this in 1976.
Before setting up the organization, she worked as a secretary.
After winning the Peace Prize, she continued to work with the organization and travelled the world to promote peace.
She married Jackie MacGuire in 1981, who was the widower of Corrigan's sister Anne who died in 1980. She is a step-parent to three of MacGuire's children, and she has two of her own - John and Luke.