"Barberton"
At a bend in the Credit River, just east of here, a mill site was developed in 1826. William and Robert Barber purchased the property in 1844 and constructed the Toronto Woollen Mills, one of the largest textile mills in Canada West (Ontario). Known as Barberton, the complex grew to some forty buildings, including a dye house, a general store, sawmill, and smithy. Ownership passed from the Barber family in 1882. Early in the First World War, the four-storey stone mill was converted to flour production. Other remanents of Barberton are William Barber's home across the street and workers' cottages on the other side of the river.
Plaque via Alan L. Brown's site Ontario Plaques. Full page here.