Centuries: 2nd century - 3rd century - 4th century
Decades: 190s 200s 210s 220s 230s - 240s - 250s 260s 270s 280s 290s
Years: 243 244 245 246 247 - 248 - 249 250 251 252 253
Cyprian becomes bishop of Carthage.
Origen writes an eight-volume work against the pagan writer Celsus.
The Roman empire celebrates the 1000th anniversary of the city of Rome with spectacular games organized by Philip the Arab
Flavia Iulia Helena, later Augusta of the Roman Empire.(approximate date)
Himiko, semi-legendary queen of Japan