Main Page | See live article | Alphabetical index Centuries: 2nd century - 3rd century - 4th century Decades: 200s 210s 220s 230s 240s - '250s\' - 260s 270s 280s 290s 300s Years: 248 249 250 251 252 - 253 - 254 255 256 257 258 Events Pope Lucius I succeeds Pope Cornelius. Aemilianus becomes Roman emperor. Valerian I becomes Roman emperor. He appoints his son Gallienus as his junior colleague. Births Deaths Pope Cornelius Aemilianus, Roman emperor Trebonianus Gallus, Roman emperor Saint Babylas, Patriarch of Antioch See also: 253 (book) This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.