12. Plaque, east side
of Yonge St. just south of Thornhill Summit Dr.
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The Founding Of
Thornhill
Settlement began here after the opening of Yonge Street in
the mid-1790's and by 1802 a grist-mill and sawmill were operating
on the Don River. The community developed slowly until 1829 when
Benjamin Thorne built a large flour mill, tannery and store. Within
a year the village also contained a post-office named "Thornhill",
a church, school and tavern. Thornhill's growth as a milling and
agricultural centre suffered after 1846 when the loss of British
markets drove Thorne out of business. Further decline occurred when
the Northern Railway bypassed the community in 1853. Recovery began
with the flow of grain southward during the American Civil War and
by 1867 about 700 residents were recorded. From 1931 to 1971
Thornhill was an incorporated Police Village.
Erected by the Ontario Heritage Foundation, Ministry of Culture and
Recreation
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