Saint Philomena is, as believed by her devotees within the Catholic Church, a young virgin martyr whose remains were discovered in 1802 in the Catacombs of Priscilla. Three tiles enclosing the tomb bore an inscription that was taken to indicate that her name (in the Latin of the inscription) was Filumena, the English form of which is Philomena.
The remains were removed to Mugnano Del Cardinale in 1805 and became the focus of widespread devotion, with several miracles credited to the saint's intercession, including the healing of Venerable Pauline Jaricot in 1835, which received wide publicity. Saint John Vianney attributed to her intercession the extraordinary cures that others attributed to himself.
In 1833 a Neapolitan nun reported that in a vision Saint Philomena had revealed that she was a Greek princess martyred at 13 years of age by Diocletian, who was Roman Emperor from 284 to 305
The shrine of her relics in Mugnano Del Cardinale continues to be visited by pilgrimages from many countries, an Archconfraternity in her honour exists, as does popular devotion in various places around the world.