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St. Catharines in Niagara Region, Ontario — Central Canada (North America)
 

Morningstar Mill - John DeCou's Falls and Mills

 
 
Morningstar Mill - John DeCou's Falls and Mills - Marker image. Click for full size.
Photographed by Kevin Westell, July 12, 2026
1. Morningstar Mill - John DeCou's Falls and Mills - Marker
Inscription. Decew Falls is named after John DeCou, an early landowner who settled in the Townships of Thorold and Grantham in about 1788. John DeCou was the son of a United Empire Loyalist and "purchased one man's right to a hundred acres for an axe and an Indian blanket, and another hundred acres for a gold doubloon". By 1792, he had built a log cabin and a saw mill on the Beaverdams Creek about two-thirds of a mile above Decew Falls. He also operated an oil mill for processing flax seed. In 1812, John DeCou purcased the property along the top of the escparment from his newly built stone house to Decew Falls.

During the War of 1812, DeCou served as a Lieutenant in the Second Regiment of the Lincoln Militia. His home was used by the British has a headquarters, and it was to his home that Laura brought news of an impending American attack in June 1813.

With the return of peace, DeCou reworked his land, repaired his mills and built a stone grist mill with an overshot waterwheel at Decew Falls. DeCou's business endeavours prospered, and the area became known as Decew Town. The small community had a school, church and a
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blacksmith shop. The construction of the First Welland Canal, however, left the mills without an adequate water supply, which prompted DeCou to sell his home and property in 1834 and move the the Township of North Cayuga.

The history of DeCou's mill from 1837, when an advertisement for its sale was placed, until 1860 is unknown. It may have operated successfully for a few years, however, the construction of the Second Welland Canal would have adversely affected its water supply. On August 20, 1860, 19th century historian, writer, engraver and traveler, Benjamin Lossing made an entry in his journal which included sketches of the DeCou house and the Falls. In his description of Decew Falls, he makes a passing reference to "the remains of an old mill" at the top of the falls.
 
Erected by City of St. Catharines.
 
Topics and series. This historical marker is listed in these topic lists: Colonial EraIndustry & CommerceSettlements & SettlersWar of 1812. In addition, it is included in the The Welland Canals series list. A significant historical year for this entry is 1788.
 
Location. 43° 6.597′ N, 79° 15.875′ W.
Morningstar Mill Museum image. Click for full size.
Photographed by Kevin Westell, July 12, 2026
2. Morningstar Mill Museum
Photo faces north and north-west from the road. This marker (centre left) is in a group of 3 panels at the north-west corner of the parking lot, and beside Beaverdams Creek (left). Over a bridge is Morningstar Mill's flour mill; the dark red building on the left is the sawmill. In between, Beaverdams Creek has its waterfall into a gorge.
Marker is in St. Catharines, Ontario, in Niagara Region. It can be reached from Decew Road, on the right when traveling west. The marker is on a post, adjacent to the north-west corner of the Morningstar Mill parking lot. Touch for map. Marker is at or near this postal address: 2714 Decew Road, St Catharines ON L0S 1E6, Canada. Touch for directions.

Regionally, this marker is on Ontario’s Golden Horseshoe and in Niagara Canada. 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: Morningstar Mill - Robert Chappell and Mountain Mills (here, next to this marker); Morningstar Mill - Harvesting Ice (here, next to this marker); Morningstar Mill - The Blacksmith and Carpentry Shop (a few steps from this marker); Morningstar Mill - The Sawmill (a few steps from this marker); Morningstar Mill - Welcome
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(a few steps from this marker); Morningstar Mill - The Mills and Property (a few steps from this marker); Morningstar Mill - The Barn (a few steps from this marker); Morningstar Mill - Later History (within shouting distance of this marker). Touch for a list and map of all markers in St. Catharines.
 
More about this marker. Captions:
Left: John DeCou's grist mill was powered with a 16 food overshot water wheel. The stone arch which can be seen from within the turbine shed is all that remains of DeCou's mill.
Right: Benjamin Lossing's sketch of Decew Falls, 1860
 
Regarding Morningstar Mill - John DeCou's Falls and Mills. 1. The original family name DeCou has more recently been spelled DeCew.
2. Where the plaque says "... the First Welland Canal, however, left the mills without an adequate water supply..." , one might get the impression that the 1st Welland canal deprived Morningstar Mill of water. Instead, I think this is true: new mills along the 1st Welland canal had a steady and plentiful water supply, so out-competed these mills; whose water supply was seasonally intermittent.
 
 
Credits. This page was last revised on July 13, 2026. It was originally submitted on July 29, 2025, by Kevin Westell of St. Catharines, Ontario. This page has been viewed 90 times since then and 28 times this year. Photos:   1, 2. submitted on July 12, 2026, by Kevin Westell of St. Catharines, Ontario. • Andrew Ruppenstein was the editor who published this page.
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Jul. 13, 2026