Basilica of Our Lady of Knock, Queen of Ireland

An 1879 apparition witnessed by fifteen people transformed a small Mayo parish into one of the world's major Marian pilgrimage centres, visited by two popes and a million pilgrims a year.

On the evening of August 21, 1879, Mary McLoughlin, the parish priest's housekeeper, was walking past the south gable of Knock parish church when she noticed unusual figures standing against the wall, bathed in light. She fetched her friend Mary Byrne, and soon fifteen people had gathered to witness the apparition. They saw the Blessed Virgin Mary wearing a white cloak and a crown from which a single golden rose emerged. To her right stood St. Joseph, his head inclined toward her. To her left stood St. John the Evangelist, dressed as a bishop, holding an open book and raising his right hand as though preaching. Behind them was an altar on which stood a young lamb, a cross behind it, and angels hovering in adoration.

The witnesses remained for over two hours, praying and watching. Rain fell throughout, yet the ground beneath the apparition stayed dry. The youngest witness was five years old, the oldest seventy-five. Their testimonies were remarkably consistent.

Archdeacon Bartholomew Cavanagh convened a commission of inquiry within weeks. In January 1880, the commission concluded that the testimony of the witnesses was trustworthy and satisfactory. A second commission in 1936 re-examined the three surviving witnesses, all now elderly, and reached the same conclusion.

The first reported cure occurred ten days after the apparition when Delia Gordon, a deaf twelve-year-old, was healed after contact with stone dust from the gable wall. Over six hundred cases of reported healing followed within the first year.