
Caesar Augustus was the first Roman emperor, reigning from 27 BC until his death in AD 14. His status as the founder of the Roman Principate has consolidated an enduring legacy as one of the most effective and controversial leaders in human history. The reign of Augustus initiated an era of relative peace known as the Pax Romana. The Roman world was largely free from large-scale conflict for more than two centuries, despite continuous wars of imperial expansion on the Empire's frontiers and the year-long civil war known as the "Year of the Four Emperors" over the imperial succession.

Galba was Roman emperor from 68 to 69, the first emperor in the Year of the Four Emperors. He was known as Lucius Livius Ocella Sulpicius Galba prior to taking the throne as a result of his adoption by his stepmother, Livia Ocellina. The governor of Hispania at the time of the rebellion of Gaius Julius Vindex in Gaul, he seized the throne following Nero's suicide.

Hadrian was a Roman emperor from 117 to 138. He was born into a Roman Italo-Hispanic family that settled in Spain from the Italian city of Atri in Picenum. His father was of senatorial rank and was a first cousin of Emperor Trajan. He married Trajan's grand-niece Vibia Sabina early in his career, before Trajan became emperor and possibly at the behest of Trajan's wife Pompeia Plotina. Plotina and Trajan's close friend and adviser Lucius Licinius Sura were well disposed towards Hadrian.

Hariulf was a Burgundian prince during the 4th century.

Isidore of Chios was a faithful Christian who was martyred on the island of Chios in 251 under the persecutions ordered by the Roman emperor Decius. His feast day is commemorated on May 14.

Tiberius Caesar Augustus was the second Roman emperor, reigning from AD 14 to 37. He succeeded his stepfather, the Roman emperor Augustus.
Titus was Roman emperor from 79 to 81. A member of the Flavian dynasty, Titus succeeded his father Vespasian upon his death.

Trajan was Roman emperor from 98 to 117. Officially declared by the Senate optimus princeps, Trajan is remembered as a successful soldier-emperor who presided over the greatest military expansion in Roman history, leading the empire to attain its maximum territorial extent by the time of his death. He is also known for his philanthropic rule, overseeing extensive public building programs and implementing social welfare policies, which earned him his enduring reputation as the second of the Five Good Emperors who presided over an era of peace and prosperity in the Mediterranean world.

Vespasian was Roman emperor from 69 to 79. The fourth and last in the Year of the Four Emperors, he founded the Flavian dynasty that ruled the Empire for 27 years.