Source: The Lives of the Fathers, Martyrs, and Saints by Alban Butler
Roman martyrology: At Rome, the holy virgin and martyr. Emerentiana. Being yet only a catechumen, she was stoned to death by the Gentiles, whilst praying at the tomb of St. Agnes, her foster-sister.
She suffered about the year 304, and is named in the Martyrologies under the name of St. Jerom, Bede, and others. She is said in her acts to have been stoned to death, while only a catechumen, praying at the tomb of St. Agnes.