Nerva–Antonine dynasty
Vitrasia was the daughter of Annia Fundania Faustina and the Roman Senator Titus Pomponius Proculus Vitrasius Pollio, consul II in 176, and her brother was Titus Fundanius Vitrasius Pollio. Through her maternal grandfather, Marcus Annius Libo consul in 128, she was a distant relative to the ruling Nerva–Antonine dynasty of the Roman Empire. Vitrasia was born and raised in Rome.