Rev. Alban Butler (171173). Volume IV: April. The Lives of the Saints. 1866.
St. Sophia, Virgin and Martyr
SHE suffered for the faith in the third age, at Firmo, in Italy, where her festival is kept on the 30th of April with great devotion. Her head is shown in a rich case in the cathedral. See Ughelli (in Episc. Firmanis,) who places her martyrdom under Decius: also Ferrarius, in Catal. Sanctor. Ital. and the Roman Martyrology.