1158
year
Year 1158 (MCLVIII) was a common year starting on Wednesday of the Julian calendar.
Events
By place
Byzantine Empire
Autumn – Emperor Manuel I Komnenos sets out from Constantinople at the head of an expeditionary army. He marches to Cilicia; and while the main army follows the coast road eastwards Manuel hurries ahead with a force of only 500 cavalry. He manages to surprise Thoros II "the Great", lord of the Armenian Kingdom of Cilicia, who participated in the attack on Cyprus in 1156. Thoros flees into the mountains and Cilicia is occupied by the Byzantines.
Europe
January 11 – Vladislav II becomes king of Bohemia. He is crowned by Frederick Barbarossa, Holy Roman Emperor, with a diadem (called by the chroniclers a diadema or circulus). Vladislaus is also invested with Upper Lusatia, and accompanies Frederick to Milan to suppress the rebellion in Lombardy (northern Italy).
The Diet of Roncaglia is convoked by Frederick I. He mobilises an army of 100,000 men and leaves in June for a second Italian expedition – accompanied by Henry the Lion and his Saxon forces. He crosses the Alps and lays siege to Milan.
The public source identifies “1158” as year. This brief keeps that definition visible, then builds a research path around year.
Why this record matters
A short description can identify a subject without explaining its stakes. For “1158”, the useful work is to connect “year” to the records capable of establishing context and consequence.
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 22, 2025. The linked authority identifier is Q19656. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1158 and 1156.
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 “1158”, its source revision and the description used here.
- Expand the search: follow 1158 primary sources, 1158 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 “1158”?
- 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 “1158” 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.