Suetonius identifies her father as the Vespasius Pollio who was a three-time military tribune and a praefectus castrorum.
The Vespasii were regarded as an old family of great renown, and Suetonius notes a site called Vespasiae where many of their monuments had been built.
This site was located on a mountaintop near the sixth milestone on the road between Nursia and Spoletum (present-day Spoleto).
[1] Vespasia married a tax collector Titus Flavius Sabinus, and survived him.
She at length drove him to it, but rather by sarcasm than by entreaties or parental authority, since she constantly taunted him with being his brother's footman.