2. The second wife of Helvidius Priscus. In the reign of Nero, when her husband was exiled, she accompanied him to Macedonia. In the reign of Vespasian she accompanied him a second time into exile. After the death of her husband she persuaded Herennius Senecio to write the life of Helvidius Priscus. The biographer was put to death by Domitian, and Fannia was punished for her suggestion by being sent into exile. (Plin. Elpist. 1.5, 7.19; Suet. Vesp. 15.)
[L.S]A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890