List of 845 Major News Events in History, Most Important Historical Events in 845
| Date | Event |
|---|---|
| March 6, 845 | The 42 Martyrs of Amorium are killed after refusing to convert to Islam. |
| March 29, 845 | Paris is sacked by Viking raiders, probably under Ragnar Lodbrok, who collects a huge ransom in exchange for leaving. |
| November 22, 845 | The first duke of Brittany, Nominoe, defeats the Frankish king Charles the Bald at the Battle of Ballon near Redon. |