250s births

Egyptian Christian monk, hermit, and saint (died 356)

Galerius Valerius Maximianus (; Greek: Γαλέριος; 258 – May 311) was Roman emperor from 305 to 311. He participated in the system of government later known as the Tetrarchy, first acting as caesar under Emperor Diocletian. In this period Galerius obtained victory warring against the Persian Sasanian Empire, defeating Narseh at the battle of Satala in 298 and possibly sacking the Sasanian capital of Ctesiphon in 299. He also campaigned across the Danube against the Carpi, defeating them in 297 and 300. Galerius was promoted to augustus upon the abdication of Diocletian in 305, but had to contend

patron saint of the Armenian Apostolic Church (c.257–c.331)

Septimius Vaballathus (; ; – ) was emperor of the Palmyrene Empire centred at Palmyra in the region of Syria.

Chinese poet (c. 255–300)

Roman suffect consul in 289 AD

Eastern Wu general and writer (250–280)