240s births

Diocletian ( ; ; ; 242/245 – 311/312), nicknamed Jovius, was Roman emperor from 284 until his abdication in 305. He was born Diocles to a family of low status in the Roman province of Dalmatia. As with other Illyrian soldiers of the period, Diocles rose through the ranks of the military early in his career, serving under Aurelian and Probus, and eventually becoming a cavalry commander for the army of Emperor Carus. After the deaths of Carus and his son Numerian on a campaign in Persia, Diocles was proclaimed emperor by the troops, taking the name "Diocletianus". The title was also claimed by C

saint, first wife of Roman emperor Constantius Chlorus, and mother of Emperor Constantine the Great (250-330)

Septimia Zenobia (; ) was a third-century queen of the Palmyrene Empire in Syria. Many legends surround her ancestry; she was probably not a commoner. She married Odaenathus, who became king of the city of Palmyra in 260, elevating it to supreme power in the Near East by defeating the Sasanian Empire of Persia and stabilizing the Roman East. After Odaenathus' assassination in 267, Zenobia became the regent of her son Vaballathus and held de facto power throughout his reign (267 to 272).

Iamblichus ( ; ; ; ) was a Syrian Arab Neoplatonist philosopher who determined a direction later taken by Neoplatonism. Iamblichus was also the biographer of the Greek mystic, philosopher, and mathematician Pythagoras. In addition to his philosophical contributions, his is important for the study of the sophists because it preserved about ten pages of an otherwise unknown sophist known as the Anonymus Iamblichi.

Greco-Roman Christian traveller and historian (c.160–c.240)

Eastern Wu emperor from 252 to 258

Prince of Zhao and Jin dynasty usurper (died 301)

Greek mathematician and astronomer

Roman consul 268 AD

Roman Consul (247-330)

Jin dynasty imperial prince (248–283)