Annius Bradua was born and raised in an aristocratic family of consular rank and was a member of the gens Annia.
Annius Gallus was a distinguished Senator and one of the serving consuls in the year 139 and his mother was Atilia Caucidia Tertulla.
[1][4] The paternal grandparents of Annius Bradua were the Senator Appius Annius Trebonius Gallus and his wife, whose name is unknown,[4] while his maternal grandparents were the Senator and Governor Marcus Appius Bradua and Caucidia Tertulla.
[4] Through his paternal grandfather, Annius Bradua was related to the Senator Marcus Annius Verus, who was a brother-in-law of Hadrian and father of Antoninus Pius' wife Faustina the Elder,[3] who was, in turn, the mother of the Empress Faustina the Younger and aunt of Marcus Aurelius.
[3] In the year 160, Annius Bradua served as an ordinary consul,[2] during which time, his sister, eight months pregnant with her sixth child, was kicked to death in the abdomen by a freedman of Herodes Atticus named Alcimedon.