Thorfinn Karlsefni
Icelandic explorer
Thorfinn Karlsefni Thórdarson was an Icelandic explorer. Around the year 1010, he followed Leif Eriksson's route to Vinland in a short-lived attempt to establish a permanent settlement there with his wife Gudrid Thorbjarnardóttir and their followers.
Nickname
The byname Karlsefni means "makings of a man" according to the preface of Magnus Magnusson and Hermann Pálsson, although the Cleasby-Vigfusson dictionary glosses it as "a thorough man", elaborated elsewhere as a "real man", a "sterling man".
History
Thorfinn's expeditions are documented in the Grœnlendinga saga ("Saga of the Greenlanders" henceforth Grl.) and Eiríks saga rauða ("Saga of Eirik the Red" Henceforth Eir.), which together are referred to as "The Vinland Sagas." The two sources differ significantly in their details (see Saga sources below).
Greenland
In Greenland, Thorfinn met and married Gudrid Thorbjarnardóttir, widow of Thorstein Eiriksson. Gudrid was staying under the care of her brother-in-law Leif Eriksson at Brattahlíð, an estate given to Leif by his father Eirik the Red after his death. Eirik had died in an epidemic c. 1003, though Eir. has him still alive and playing host to Gudrid.
Vinland
According to Grl., Thorfinn decided to go to Vínland at the insistence of his wife Gudrid.
“Thorfinn Karlsefni” enters the record as icelandic explorer. Crown Archives preserves that source wording while asking what Thorfinn, Karlsefni and Icelandic can confirm, complicate or overturn.
Why this record matters
“Thorfinn Karlsefni” is worth following because a concise public description often conceals a longer documentary argument. Here, Thorfinn, Karlsefni and Icelandic provides the most credible route into that argument.
Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Sep 19, 2026. The linked authority identifier is Q137732. VIAF identifies the subject as 19128291. The Library of Congress control number is n2007021915. 3 of 4 selected statements include explicit references; 2 carry qualifiers and 0 use preferred rank. The first chronological checks are 1010 and 1003.
A concise general-reference account can conceal disagreements about scope, terminology or the weight assigned to individual sources. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. 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 “Thorfinn Karlsefni”, its source revision and the description used here.
- Expand the search: follow Thorfinn Karlsefni primary sources, Thorfinn Karlsefni archive and Thorfinn 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 “Thorfinn Karlsefni”?
- 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 “Thorfinn Karlsefni” 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.