Fr Flanagan is reported as having said: “The old-fashioned home with fireside companionship, its religious devotion and its closely-knit family ties is my idea of what a home should be.”
Is Fr Colm O’Brien a candidate for sainthood?
The miracle relates to the healing of a baby in the womb whose life, and that of her mother's, were under threat.
The beatification will be the first ever ceremony of its kind to take place in Ireland.
Three other martyrs recognised: Polish Franciscans, Michal Tomaszek and Zbigniew Strazalkowski, and Italian Fr Alessandro Dordi.
Panel of theologians say Archbishop was killed “in hatred of the faith” paving the way for his recognition as a martyr.
Mother Mary Veronica of the Passion founded the Sisters of the Apostolic Carmel, a Discalced Carmelite Third Order for women based in India.