| 0789 none | Event | Viking attacks begin on England | |
| 0800 none | Event | Oseberg Viking longship buried around this date | |
| 0823 April 6 | Event | Lothair I Crowned Holy Roman Emperor | |
| 0840 none | Event | Viking settlers found the city of Dublin in Ireland | |
| 0844 none | Event | A Viking raid on Seville is repulsed | |
| 0860 none | Event | Rus Vikings attack Constantinople | |
| 0862 none | Event | Novgorod founded in Russia | by Rus Viking Ulrich |
| 0866 none | Event | Danish Vikings establish a Kingdom | In York, England. |
| 0872 none | Event | Harold I gains control of Norway | |
| 0879 none | Event | Rurik establishes Kiev | as the centre of the Kievan Rus' domains. |
| 0886 none | Event | King Alfred divides England with the Danes | under the Danelaw Pact. |
| 0900 none | Event | The Vikings raid along the Mediterranean coast. | |
| 0911 none | Event | Chief Rollo is granted land by the Franks | and creates Normandy in France. |
| 0941 none | Event | Rus Vikings attack Constantinople | Now called Istanbul |
| 0981 none | Event | Eric the Red discovers Greenland | |
| 0991 none | Event | Aethelred II pays first Danegeld ransom | to prevent Danish attacks on England. |
| 1014 April 23 | Event | Battle of Clontarf | King Brian Boru defeats the Danes. |
| 1030 July 29 | Event | Battle of Sticklestad | resulting in the death of St. Olaf, King of norway. |
| 1035 none | Event | King Harold I "Harefoot" crowned | King of All England |
| 1040 none | Event | King Harðacnut crowned | King of All England |
| 800 January | Event | Oseburg Ship is Buried | |
