Faustina, named after her mother, was her parents' fourth and youngest child and second daughter; she was also their only child to survive to adulthood.
She was born and raised in Rome.

Her great uncle, the emperor Hadrian, had arranged with her father for Faustina to marry Lucius Verus.
On 25 February 138, she and Verus were betrothed.
Verus’ father was Hadrian's first adopted son and his intended heir; however, when Verus’ father died, Hadrian chose Faustina's father to be his second adopted son, and eventually, he became Hadrian's successor.
Faustina's father ended the engagement between his daughter and Verus and arranged for Faustina's betrothal to her maternal cousin, Marcus Aurelius; Aurelius was also adopted by her father.
Faustina, named after her mother, was her parents' fourth and youngest child and second daughter; she was also their only child to survive to adulthood. She was born and raised in Rome.
Her great uncle, the emperor Hadrian, had arranged with her father for Faustina to marry Lucius Verus. On 25 February 138, she and Verus were betrothed. Verus’ father was Hadrian's first adopted son and his intended heir; however, when Verus’ father died, Hadrian chose Faustina's father to be his second adopted son, and eventually, he became Hadrian's successor. Faustina's father ended the engagement between his daughter and Verus and arranged for Faustina's betrothal to her maternal cousin, Marcus Aurelius; Aurelius was also adopted by her father.
Faustina the Younger