Plautia Fabia mother of ancient Roman imperial heir Lucius Aelius Caesar Parents Fabia Barbara Lucius Aelius Plautius Lamia Aelianus Children Marcus Vettulenus Civica Barbarus Marcus Ceionius Commodus Lucius Aelius Caesar Avidia Plautia Siblings Aelia Plautia Aelia Plautilla Partners Gaius Avidius Nigrinus Lucius Ceionius Commodus Sextus Vettulenus Civica Cerialis