Ceionia Fabia

Ceionia Fabia (flourished 2nd century) was a noble Roman woman and a member of the ruling Nerva–Antonine dynasty of the Roman Empire.

Fabia was the first-born daughter to the Roman Senator Lucius Aelius Caesar and Avidia Plautia. Her father from 136-138, was the first adopted heir and successor of the Roman Emperor Hadrian (117-138). Fabia had three siblings: a sister Ceionia Plautia and two brothers: the Roman Emperor Lucius Verus who co-ruled with Marcus Aurelius from 161-169 and Gaius Avidius Ceionius Commodus. Her cognomen Fabia reveals that her father was related to the gens Fabius. However, whom she was named after from the gens Fabius is unknown. Fabia was born and raised in Rome.

Her maternal grandparents were the Roman Senator Gaius Avidius Nigrinus and the unattested noblewoman Ignota Plautia. Although her adoptive paternal grandparents were the Roman Emperor Hadrian and Roman Empress Vibia Sabina, her biological paternal grandparents were the consul Lucius Ceionius Commodus and noblewoman Aelia or Fundania Plautia.

Sometime in 136 after Hadrian announced that her father was to be the Emperor’s official heir, on the wishes of Hadrian, the emperor betrothed Fabia to Hadrian’s great-nephew Marcus Aurelius. Although Fabia and Aurelius became engaged, the engagement did not survive Hadrian; immediately after the emperor's death, Antoninus Pius, Hadrian's second adopted son and the new emperor, approached Marcus and requested that his marriage arrangements be amended: Marcus' betrothal to Ceionia Fabia would be annulled, and he would be betrothed to Faustina, Antoninus' daughter, instead. Faustina's betrothal to Ceionia's brother Lucius Commodus would also have to be annulled. Marcus consented to Antoninus' proposal.

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