Ulpius is a name associated with several notable figures in ancient Roman history, particularly during the time of the Roman Empire. One of the most prominent individuals was Marcus Ulpius Trajanus, commonly known as Emperor Trajan, who ruled from 98 to 117 AD. He is celebrated for his military conquests and for expanding the Roman Empire to its greatest territorial extent. The Ulpius family also contributed to Roman society through various public officials and military leaders. The name is often linked to the Ulpii, a prominent Roman family known for their influence and contributions to the governance and military of ancient Rome.