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| 1195 | Birth |  |
| Manarola Birth of Innocent IV, he belonged to a feudal family of Liguria, the Fieschi, counts of Lavagna |
| 1243 | Election | |
| 25th June Anagni Innocent IV is elected unanimously at the conclave in Anagni |
| 1243 | Pope | |
| Vatican Appointed Pope, Sinibaldo Fieschi, Frederick II's candidate |
| 1244 | Exile of Innocent IV | |
| Genoa Finding his position in Rome insecure, Innocent IV secretly withdraws to Genoa |
| 1245 | Abdication | |
| Vatican Calls the Council of the Church & declares Frederick II deposed |
| Pope Innocent IV declares Conrad IV deposed |
| Pope Innocent IV deposes Sancho II |
| 1245 | Council Lyons | |
| 27th July Lyons The Council of Lyons declares Frederick II deposed |
| 1245 | Rebellion | |
| Encourages rebellion in Germany to overthrow Frederick II |
| 1248 | Battle of Vitoria | |
| Vitoria A League of Italian cities defeats Frederick II |
| 1250 | Battle of Lucera | |
| Lucera A League of Italian cities defeats Frederick II |
| 1250 | Rule of Sicily | |
| Sicily Establishes Papal overlordship in Sicily |
| 1252 | Inquisition | |
| Inquisitors are allowed bt the Pope to licence torture |
| 1252 | Reform | |
| Inquisitors are allowed bt the Pope to licence torture |
| 1254 | Battle of Foggia | |
| 7th Dec Foggia Death of Innocent IV, it was on a sick bed at Naples that Innocent IV heard of Manfred's victory at Foggia against the Papal forces, said to have precipitated his death |
| 1254 | Death | |
| 7th Dec Naples Death of Innocent IV, it was on a sick bed at Naples that Innocent IV heard of Manfred's victory at Foggia against the Papal forces, said to have precipitated his death |
| 1254 | Excommunication of Innocent IV | |
| Excommunicates Frederick II's son, Conrad IV, King of Germany |
| 1254 | Rebellion | |
| Vatican Emperor Manfred rebels against the Pope |
| 1254 | Rule of Italy | |
| Receives the title of Papal vicar for southern Italy, Innocent lives a period in which he was the effective sovereign of most of the peninsula |
| 1254 | Rule of Naples | |
| 27th Oct Innocent IV enters the city of Naples |
| 1254 | Rule of Sicily | |
| Sicily The Papacy reclaims its overlordship of Sicily & turns it over to the French Angevins |
