643
year
Year 643 (DCXLIII) was a common year starting on Wednesday of the Julian calendar. The denomination 643 for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.
Events
By place
Byzantine Empire
Emperor Constans II recognises Theodore Rshtuni as ruler of Armenia, after his successful campaign against the Muslims. He names him commander (nakharar) of the Armenian army.
Maurikios names himself dux of Rome, and revolts against exarch Isaac (Exarchate of Ravenna). He declares Rome's independence from the Exarchate and from the Byzantine Empire.
Europe
King Rothari of the Lombards issues the Edictum Rothari, which is the first codification of Lombard law (written in Latin). The edict guarantees rights only for Lombard subjects.
Duke Leuthari II has Otto, mayor of the palace of Austrasia, murdered. He is succeeded by Grimoald the Elder, the eldest son of Pepin of Landen.
“643” enters the record as year. Crown Archives preserves that source wording while asking what year can confirm, complicate or overturn.
Why this record matters
“643” is worth following because a concise public description often conceals a longer documentary argument. Here, year provides the most credible route into that argument.
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 Feb 27, 2026. The linked authority identifier is Q31634. None of the 0 selected statements returned an explicit reference.
Overview language is designed for orientation and should not be treated as a substitute for the evidence cited beneath it. 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 “643”, its source revision and the description used here.
- Expand the search: follow 643 primary sources, 643 archive and year 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 “643”?
- Which cited source is closest to the event, object or claim?
- Which institution is responsible for the underlying evidence?
Search terms from this dossier
This entry incorporates text from “643” 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.