1090
year
Year 1090 (MXC) was a common year starting on Tuesday of the Julian calendar.
Events
By place
Europe
A third Almoravid expedition is launched in Al-Andalus, designed to finally subdue the Taifa's Kingdoms. The cities of Córdoba, Seville, Granada, Málaga, Almería and Ronda fall to the troops of Sultan Yusuf ibn Tashfin.
King Stephen II of Croatia becomes involved in an open conflict between factions of the Croatian nobility, who reassert their traditional rights in their own counties.
November 3 – King William Rufus of England tries to take advantage of the unrest in Normandy and take it from his brother Robert Curthose. Though he wins over several Norman nobles to his side, his plot to capture the capital city of Rouen fails.
Middle East
Hassan-i Sabbah founds the Nizari Ismaili state after taking control of the Alamut Castle and organising the military group called the Order of Assassins.
Africa
Béjaïa (or Bugia) becomes the capital of the Hammadid dynasty in modern-day Algeria. It becomes an important port and centre of culture.
By topic
Arts and Culture
Troubadours begin playing in western Aquitaine (Poitou and Saintonge) and Gascony (approximate date).
Begin with the source’s own compact description: “1090” is year. The dossier treats that line as a proposition to test through year, not as a finished interpretation.
Why this record matters
The phrase “year” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
The citation trail is more important than the brevity of the summary: it shows where individual claims can be examined in context. The source revision retrieved here is dated Jul 2, 2026. The linked authority identifier is Q19466. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1090.
The absence of detail may reflect summary conventions rather than a lack of surviving documentation. 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 “1090”, its source revision and the description used here.
- Expand the search: follow 1090 primary sources, 1090 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 “1090”?
- What terminology or title could unlock a more precise catalogue search?
- Which cited source is closest to the event, object or claim?
Search terms from this dossier
This entry incorporates text from “1090” 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.