1399
year
Year 1399 (MCCCXCIX) was a common year starting on Wednesday of the Julian calendar.
Events
January–March
January 13 – In the Delhi Sultanate in what is now the Uttarakhand state of India, Timur the Lame captures and sacks Haridwar.
February 3 – John of Gaunt, Duke of Aquitaine uncle of King Richard II of England and father of Henry Bolingbroke, dies and King Richard becomes ruler of the Duchy.
February 19 – The Principality of Piombino is formed after Prince Gherardo Appiani sells the city of Pisa to the Duchy of Milan for 200,000 florins and possession of five cities and three islands (including Elba).
March 18 – Richard II of England cancels the legal documents allowing the exiled Henry Bolingbroke to inherit his father's lands, leading to Henry's decision to overthrow King Richard.
April–June
April 13 – The coronation of Martin of Aragon as King takes place in Barcelona. His wife Maria de Luna is crowned as the Queen consort takes place on April 23.
May 3 – Pope Boniface IX of Rome excommunicates Onorato Caetani, Great Constable of the Kingdom of Naples, who had previously been excommunicated in 1367 by Pope Urban V of Rome, and then was forgiven in 1378 by Pope Clement VII of Avignon. Boniface's action follows Caetani's continued support of the Avignon papacy, after which a crusade against Caetani's properties at Fondi.
May 10 – The Treaty of Tarbes is signed between representatives of King Charles VI of France and Archambaud of Grailly, who has been an ally of the French monarch's enemy, King Richard II of England.
This brief starts where responsible research should: with the source description of “1399” as year. Everything that follows is an evidence route, not borrowed authority.
Why this record matters
The subject matters to the general reference register because the source frames it as year. Its deeper value depends on whether names, dates, institutions and citations support that framing.
Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Jul 2, 2026. The linked authority identifier is Q6422. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1399, 1367 and 1378.
The absence of detail may reflect summary conventions rather than a lack of surviving documentation. 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
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The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
- Establish the record: confirm the title “1399”, its source revision and the description used here.
- Expand the search: follow 1399 primary sources, 1399 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
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This entry incorporates text from “1399” 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.