Marker Logo
THE HISTORICAL
MARKER DATABASE
“Bite-Size Bits of Local, National, and Global History”
Sandwich in Windsor in Essex County, Ontario — Central Canada (North America)
 

The Mansion on the Detroit River Frontier

 
 
The Mansion on the Detroit River Frontier Marker image. Click for full size.
Photographed by Bill Coughlin, July 9, 2025
1. The Mansion on the Detroit River Frontier Marker
Inscription.
3:1 | Windmills on the Detroit River
Numerous windmills were found along the extent of the Detroit River in the early 19th century. The windmill pictured below is similar to the one which was situated diagonally from the Duff-Baby House. Originally owned by James [Jacques] Baby and possibly built as early as 1790, the mill was used to grind bushels of grain. In fact, it was “reported to have ground as much as 100 bushels of wheat a day during the war of 1812-13.” [Lajeunesse, The Windsor Border Region] The mills were strategically positioned along the shore to take advantage of unencumbered wind power and provide ease of access for boats. Interestingly, the artist of this watercolour, James Van Cleve, was a Great Lakes ship captain and lived in the Duff-Baby House in the 1880’s.

3:2 | Duff-Baby Mansion
Originally built as a fur-trading establishment by Alexander Duff, this imposing structure is central to the sketch [above] and, in its time, was central to the town’s activities. This ‘mansion’ was built in the ‘Frontier Georgian’ style of architecture and, when constructed, it was the largest building in Sandwich. It’s considered to be “one of the most important and best preserved examples of Georgian domestic architecture surviving in Ontario,” [R. Alan Douglas].
After Duff’s ownership, the significance
Paid Advertisement
Click or scan to see
this page online
of the house shifted from fur-trading to the War of 1812. The Hon. James [Jacques] Baby bought the house for his residence in 1807. Hence, the house bears the name of the first two owners. Baby was a man of great political and local military influence. Numerous notable individuals involved in the war visited the house, among them: Gen. Sir Isaac Brock, Shawnee Leader Tecumseh, Gen. Henry Proctor and future American President, Gen. William Henry Harrison. While meeting in the dining room of this house in the Fall of 1813 and hearing of American military advancements on the Detroit River, British leaders called for a retreat, also by way of the river. Although the house and many structures in Sandwich were damaged, looted and some destroyed, the Duff-Baby Mansion stands to this day. Presently, the house is owned by the Ontario Heritage Trust.



3:3 | KEY
1. Windmill
2. McGregor-Cowan House

      Present address 3118 Sandwich Street
3. Probable Site of Baby’s Mill
4. Mill St.
5. Duff-Baby House
6. Fishing Huts
      Multiple Sites
7. Courthouse and Jail
      Replaced by Mackenzie Hall in 1855/present address: 3277 Sandwich St.
8. St. John’s Anglican Church and Cemetery
      Present address: 3305 Sandwich St.
9. Military Barracks
      Present day Brock Public School Site: 3312 Sandwich
The Mansion on the Detroit River Frontier Marker image. Click for full size.
Photographed by Bill Coughlin, July 9, 2025
2. The Mansion on the Detroit River Frontier Marker
St.
 
Topics and series. This historical marker is listed in these topic lists: Colonial EraWar of 1812. In addition, it is included in the Windmills series list. A significant historical year for this entry is 1790.
 
Location. 42° 18.147′ N, 83° 4.56′ W. Marker is in Windsor, Ontario, in Essex County. It is in Sandwich. It is on Sandwich Street north of Mill Street, on the right when traveling south. Touch for map. Marker is at or near this postal address: 3190 Sandwich Street, Windsor ON N9C N9C, Canada. Touch for directions.

Regionally, this marker is in the Southwest Ontario Area and in Southwestern Ontario. It is also in Central Canada. Globally, it is in North America, the Western Hemisphere, the Western World, and the Anglosphere. Historically, it finds itself in what was once a British colony, the Viceroyalty of New France, the Haudenosaunee (Iroquois) Confederacy, and Rupert’s Land.

Other nearby markers. At least 8 other markers are within walking distance of this marker: Fur Trade & European Settlement (here, next to this marker); Sandwich and the Underground Railroad (a few steps from this marker); Indigenous Movement of People (a few steps from this marker); The Founding of Sandwich (within shouting distance of this marker); The Story of the Anchor (The James Norris) (within shouting distance of this marker); Battle of Lake Erie (within shouting distance of this marker); Movement of Indigenous Trade (within shouting distance of this marker); The Battle of Windsor (within shouting distance of this marker). Touch for a list and map of all markers in Windsor.
 
More about this marker. The bottom of the marker contains three pictures. The first is a “watercolour sketch of Montreuil Mill by James
Paid Advertisement
Van Cleve, 1881”. Next is another picture with the caption “Americans occupy Sandwich, 1813 by Peter Rindlisbacher.” The last picture depicts Major General Sir Isaac Brock, Hero of the Battle of Detroit.”
A sketch of the town of Sandwich is at the top of the marker. The key to the buildings in this sketch is found in the 3:3 section of the marker.
 
 
Credits. This page was last revised on September 3, 2025. It was originally submitted on July 30, 2025, by Bill Coughlin of Woodland Park, New Jersey. This page has been viewed 161 times since then and 33 times this year. Last updated on August 23, 2025, by Tim Boyd of Hamilton, Ontario. Photos:   1, 2. submitted on July 30, 2025, by Bill Coughlin of Woodland Park, New Jersey. • Devry Becker Jones was the editor who published this page.
m=282518

CeraNet Cloud Computing sponsors the Historical Marker Database.
This website earns income from purchases you make after using our links to Amazon.com. We appreciate your support.
Paid Advertisement
Jul. 4, 2026