- Opening of the Birmingham Oratory at Alcester Street.
- Establishment of the London Oratory.
- Publication of Mixed Discourses
| - Great Famine in Ireland.
- Abolition of the Corn Laws.
| - The French invade Rome to restore Pope Pius IX to power.
- New Roman Republic established in Italy.
- Hungarian Revolution.
- Zachary Taylor sworn in as 12th President of the United States.
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