10th century in Denmark
overview of Denmark-related events during the 10th century

The 10th century in Denmark saw the emergence of the country into historical records and the conversion of the country to Christianity. The 950s are when the first records of the state of Denmark (Tan-marker) appeared.
Monarchs
Gorm the Old, 940–958
Harald Bluetooth, 940–986
Sweyn Forkbeard, 986–1014
Events
910s
911 – The Vikings settle in Normandy
940s
940 – Around this year, Harald Bluetooth becomes king, ruling with his father Gorm the Old. Bluetooth will later impose Christianity on his people.
942 – William I, Duke of Normandy offers asylum to Harald, and restores him to his throne by force. William I is assassinated later that year. However, the "Haigrold" described by the chronicler was possibly King Harald Greycloak of Norway or different Viking.
947 – The Norwegian Eric Bloodaxe is elected King of York. He is deposed when the English king Eadred marches north, and flees to Denmark.
949 – Eric Bloodaxe returns from Denmark to England.
“10th century in Denmark” enters the record as overview of Denmark-related events during the 10th century. Crown Archives preserves that source wording while asking what 10th, century and Denmark can confirm, complicate or overturn.
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Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Dec 21, 2025. The linked authority identifier is Q4547201. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1014.
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This entry incorporates text from “10th century in Denmark” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.