Her existing hagiography, written between about 450 and 500 AD, is of no historical value and the relations it attributes to Susanna are entirely fictitious.

[2][3][4] Her feast day is on 11 August in the Roman Martyrology, but since 1969 her veneration has been limited to the Church of Santa Susanna in Rome.

The account claims that on her refusal to marry a pagan relative of the Emperor Diocletian, she was arrested as a Christian.

[7] Susanna is mentioned in the Roman Martyrology for 11 August in the following terms: "At Rome, commemoration of Saint Susanna, in whose name, which was mentioned among the martyrs in ancient lists, the basilica of the titular church of Gaius at the Baths of Diocletian was dedicated to God in the sixth century.

"[8] The commemoration of her that was included in the General Roman Calendar was removed in 1969 because of the legendary character of the Acts of her martyrdom.