What happened on May 12, 254?

Name: Stephan I succeeds Lucius I as Catholic Pope
Start: 0254-05-12
End: 0254-05-12

Stephan I succeeds Lucius I as Catholic Pope

250
St. Fabian ends his reign as pope of the Catholic Church (236-250)
Pope Fabian (Latin: Fabianus) was the bishop of Rome and head of the Catholic Church from 10 January 236 until his death on 20 January 250, succeeding Anterus.
251
The Battle of Abrittus in the Balkans won by the Goths against the Romans. Roman Emperors Decius and Herennius Etruscus
The Battle of Abrittus in the Balkans won by the Goths against the Romans. Roman Emperors Decius and Herennius Etruscus are killed
253
St Lucius I begins his reign as Catholic Pope
Pope Lucius I was the bishop of Rome from 25 June 253 to his death on 5 March 254. He was banished soon after his consecration, but gained permission to return.

257
St Stephen I's death ends his reign as Catholic Pope
St Stephen I's death ends his reign as Catholic Pope
257
St Sixtus II begins his reign as Catholic Pope
St Sixtus II begins his reign as Catholic Pope
258
Pope St Sixtus II beheaded in Rome under persecutions by Roman Emperor Valerian
Pope Sixtus II, also written as Pope Xystus II, was The Pope of Rome from 31 August 257 until his death on 6 August 258.
259
Saint Dionysius elected as Pope, succeeding Sixtus II
Pope Dionysius was the bishop of Rome from 22 July 259 AD to his death on 26 December 268.