Håkon Grjotgardsson
ruler of Trøndelag (838-900)

Håkon Grjotgardsson (Old Norse: Hákon Grjótgarðsson) was the first Earl of Lade and an ally of Harald Fairhair, King of Norway.
Biography
Nicknamed Håkon the Rich (Hákon jarl hinn riki) and Håkon the old (Hákon jarl hinn gamli), he was the son and heir of Grjotgard Herlaugsson Lade. He succeeded his father as ruler of the petty kingdom of Trøndelag. His daughter Åsa, married Harald Fairhair and was the mother of Guttorm Haraldsson and Halfdan Haraldsson. Håkon was also the father of Sigurd Håkonsson, who was the father of Haakon Sigurdsson.
Håkon had his residence at Ørlandet at the mouth of the Trondheimsfjord. The exact extent of his control over the area is not confirmed. Håkon sought to extend his kingdom southwards. Harald Fairhair advanced across the mountains of Eastern Norway to subjugate Trøndelag. After some fighting, Håkon and Harald entered a union of joint forces.
The public source identifies “Håkon Grjotgardsson” as ruler of Trøndelag (838-900). This brief keeps that definition visible, then builds a research path around Håkon, Grjotgardsson and ruler.
Why this record matters
A short description can identify a subject without explaining its stakes. For “Håkon Grjotgardsson”, the useful work is to connect “ruler of Trøndelag (838-900)” to the records capable of establishing context and consequence.
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 Aug 27, 2025. The linked authority identifier is Q31695. None of the 1 selected statements returned an explicit reference.
A concise general-reference account can conceal disagreements about scope, terminology or the weight assigned to individual sources. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
- Subject orientation
- Search vocabulary
- Locating named sources
The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
- Establish the record: confirm the title “Håkon Grjotgardsson”, its source revision and the description used here.
- Expand the search: follow Håkon Grjotgardsson primary sources, Håkon Grjotgardsson archive and Håkon research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Håkon Grjotgardsson”?
- Which institution is responsible for the underlying evidence?
- What terminology or title could unlock a more precise catalogue search?
Search terms from this dossier
This entry incorporates text from “Håkon Grjotgardsson” 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.