Brother Columba O’Neill, C.S.C., born John O’Neill on November 5, 1848, in Mackeysburg, Pennsylvania, entered the world with a congenital foot deformity that led doctors to believe he wouldn't survive infancy. Defying expectations, he lived to the age of 75, spending much of his life as a member of the Congregation of Holy Cross. He joined the order in 1874, taking the name Columba, and served as a cobbler at the University of Notre Dame for nearly four decades. Despite his physical limitations, Brother Columba was known for his humility, deep faith, and dedication to prayer.‍

Brother Columba's reputation extended beyond his craftsmanship; he became known for his intercessory prayers, which many believed led to miraculous healings. He attributed these cures not to himself but to the Sacred Heart of Jesus and the Immaculate Heart of Mary. Over the years, he received thousands of letters seeking his prayers, and his correspondence includes numerous accounts of favors and cures attributed to his intercession.

In recognition of his virtuous life and the widespread devotion he inspired, the Diocese of Fort Wayne-South Bend initiated the cause for his canonization, and he was declared a Servant of God.