Her brother was probably Sextus Vistilius, a former praetor, who was a close friend to the Roman General Nero Claudius Drusus, the younger brother to Roman Emperor Tiberius. In the opinion of Frederik Juliaan Vervaet, this made Vistilia "an extremely valuable bride, whose connections offered her husbands and their joint children fantastic prospects.
The passage highlights the significance of Vistilia's family connections in terms of marriage prospects. Her brother's position as a former praetor, coupled with his close ties to Nero Claudius Drusus, made her an attractive bride for potential husbands and ensured their children would benefit from those connections.