Offices Quadratus Annianus held included legate to the proconsul of Africa, and consul ordinarius in 167 with the emperor Lucius Aurelius Verus.
[1] Quadratus Annianus was the son of Marcus Aurelius’ sister, Annia Cornificia Faustina and an unnamed Senator.
At her death, M. Ummidius Quadratus Annianus and Ummidia Cornificia Faustina divided their mother's property, making them both very wealthy.
Commodus’ sister Lucilla was not happy living as a quiet, private citizen in Rome and became jealous of her brother and her sister-in-law.
Lucilla, her daughter, and Ummidia Cornificia Faustina were banished to the Italian island of Capri, and later executed.