Cashel, Markham
dispersed rural community in Markham, Ontario
Cashel, Ontario is a small hamlet situated in Unionville, Ontario located at the intersection of Elgin Mills Road and York Regional Road 67. Originally it was called Crosby Corners after John Crosby (born 1797), the village's first store owner, who came originally from New York State. The name was changed to Cashel in 1851 with the opening of its first post office (located at southwest corner of Major Mackenzie and McCowan Road). It was likely named after Cashel in Ireland. In 1851 the community had a sawmill, cobbler shop, blacksmith shop, wagon shop, inn and tavern, Masonic Lodge, and Presbyterian church. In 1890 Peaches United Church was built on land from farmer Thomas Peach at 10762 McCowan Road. The church is a historic site and not operating since the 1960s to 1970s, but cemetery remains in active use. The east west sideroad along the church was locally called Peaches (Peach's) Sideroad or otherwise known as Elgin Mills Road.
There are few dwellings located at the site, most of them near York Regional Road 3, the western boundary of this community. Other parts of the community is mainly farmlands.
This brief starts where responsible research should: with the source description of “Cashel, Markham” as dispersed rural community in Markham, Ontario. 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 dispersed rural community in Markham, Ontario. Its deeper value depends on whether names, dates, institutions and citations support that framing.
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 Sep 9, 2026. The linked authority identifier is Q5048721. Authority coordinates are 43.916, -79.323. 1 of 1 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1797, 1851 and 1890.
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.
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Three-step research path
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- Expand the search: follow Cashel, Markham primary sources, Cashel, Markham archive and Cashel 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 “Cashel, Markham” 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.