Saints Simplicius, Faustinus and Beatrix (or Beatrice, Viatrix) were siblings martyred in Rome during the Diocletian persecution (302 or 303).

The legend about them is that the brothers Simplicius and Faustinus were cruelly tortured on account of their Christian faith, beaten with clubs, and finally beheaded; their bodies were thrown into the Tiber (according to another version a stone was tied to them and they were drowned).

[2][3] Then for seven months she lived with a pious woman named Lucina and together they secretly helped persecuted Christians.

Her friend Lucina buried her with her brothers in the cemetery ad Ursum Pileatum on the Via Portuensis.

[1] Divine punishment soon overtook the accuser Lucretius, who at a feast was mocking the folly of the martyrs.

Pope Leo II (682-683) translated their relics to a church which he had built in Rome in honor of Santa Bibiana.