Analysis of information sources in references of the Wikipedia article "Valeria Maximilla" in English language version.
[From Peter de Natalibus.] Catherine, Virgin and Martyr, suffered at Alexandria under Maxentius the Emperor. [...] the Queen Faustina, his wife, touched with pity, bribed Catherine's gaolers with the assistance of Porphyrius, captain of the host, and came by night to the prison.
Peter de Natalibus gives her the name Faustina, under which name, he says, she was canonized, the day of her martyrdom being 9 Kal. Dec. I believe there is no evidence that Maximin had a wife named Faustina; and Maxentius, as I have before said, was never in Alexandria. Archbishop Falconius [Niccolò Carminio Falconi / Nicolaus Carminius Falconius, 18th c.] calls the empress "uxor illa per somnium Maxentii imperatoris."