Châteauguay
city in Montérégie, in the province of Quebec, Canada
Châteauguay (English: SHAT-oh-gay, French: [ʃɑtoɡɛ], locally [-ɡe] ) is an off-island suburb of Montreal, in southwestern Quebec, located on both the Châteauguay River and Lac St-Louis, which is a section of the St. Lawrence River. The population of the city of Châteauguay at the 2021 Census was 50,815, and the population centre was 75,891.
History
The land was first given to Charles Lemoyne by the governor of New France at the time, the Comte de Frontenac with the intention of setting up a seigneurie in the area. Afterwards the seigneurie was assumed by Zacharie Robutel de la Noue in 1706. In 1763 France relinquished its claims in Canada and Châteauguay was now under British mandate. The seigneurie was bought by Marguerite d'Youville, a founder of the Quebec religious society the Grey Nuns in 1765 and 10 years later construction began on the Church of Saint-Joachim.
Châteauguay played an important part in the colonial history of North America. With the United States having declared war on Britain in 1812, Châteauguay was seen as little more than a good vantage point to post troops to defend Montreal against an invasion. This prong of the American advance on Montreal ended with the Battle of the Châteauguay, where on October 26, 1813, Lieutenant Colonel Charles de Salaberry succeeded in halting the American force of 4,000 advancing on Montreal with only some 400 troops, mostly French-Canadian and 170 Kahnawake Mohawk warriors.
Begin with the source’s own compact description: “Châteauguay” is city in Montérégie, in the province of Quebec, Canada. The dossier treats that line as a proposition to test through Châteauguay, city and Montérégie, not as a finished interpretation.
Why this record matters
The phrase “city in Montérégie, in the province of Quebec, Canada” 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 strongest evidence will usually combine a dated visual record with documents produced by the authority responsible for the place. The source revision retrieved here is dated Sep 18, 2026. The linked authority identifier is Q141522. VIAF identifies the subject as 143418987. The Library of Congress control number is no2004070903. Authority coordinates are 45.383, -73.750. 3 of 5 selected statements include explicit references; 2 carry qualifiers and 0 use preferred rank. The first chronological checks are 2021, 1706, 1763 and 1765.
Architectural summaries often privilege surviving fabric and can understate demolished phases, contested use or displaced communities. 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
Treat names, boundaries and functions as historically changeable. Maps, plans, inventories and administrative records can clarify what the place meant at different dates.
- Historic place names
- Jurisdictional context
- Routes into maps and plans
Contemporary maps, plans, listed-building records, estate papers and the responsible local or national archive.
Three-step research path
- Establish the record: confirm the title “Châteauguay”, its source revision and the description used here.
- Expand the search: follow Châteauguay primary sources, Châteauguay archive and Châteauguay 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 “Châteauguay”?
- Which earlier names or jurisdictions may reveal additional records?
- Which authority defined the place, boundary or structure at the relevant date?
Search terms from this dossier
This entry incorporates text from “Châteauguay” 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.