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| Anti Pope Novatian |  |
| Appointed Anti-Pope |
| Assassination Decius Traianus |  |
| Abricium Death of Decius & his son Herennius , assassinated |
| Assassination Herennius Etruscus | |
| Abricium Death of Decius & his son Herennius , assassinated |
| Battle of Abricium Decius Traianus | |
| Abricium Death of Decius & his, fighting the Goths |
| Death Decius Traianus | |
| Abricium Death of Decius & his son Herennius , assassinated |
| Death Herennius Etruscus | |
| Abricium Death of Decius & his son Herennius , assassinated |
| Death Hostillian | |
| Death of Hostillian, from the plague |
| Peace Gallus | |
| Makes peace with the Goths |
| Pope Cornelius | |
| Vatican Appointed Pope |
| Succession Gallus | |
| Succeeds as Emperor of Rome, concludes peace with the Goths |
| Rome Succeeds as Emperor of Rome, concludes peace with the Goths |
| Succession Herennius Etruscus | |
| Created "Augustus", elder son of Trajan Decius |
| Succession Hostillian | |
| Created "Augustus", younger son of Trajan Decius |
| Succession Volusian | |
| Son of Trebonianus Gallus . Rules jointly with his father |
