Through her maternal grandfather, Elpinice was a relative to the Roman Empress Faustina the Elder, wife of the Roman Emperor Antoninus Pius. Faustina the Elder was the mother of Roman Empress Faustina the Younger and aunt of Roman Emperor Marcus Aurelius. Thus she was a relative to the family of Faustina the Younger and Marcus Aurelius.Pomeroy, The murder of Regilla, p. 14
