Simcoe realised that Newark made an unsuitable capital because it was on the Canada–US border and subject to attack. He proposed moving the capital to a more defensible position, in the middle of Upper Canada's southwestern peninsula between Lake Erie and Lake Huron. He named the new location London, and renamed the river there the Thames in anticipation of the change. Dorchester rejected this proposal, but accepted Simcoe's second choice, the present site of Toronto. Simcoe moved the capital there in 1793, and renamed the settlement York after Frederick, Duke of York, King George III's second son. The town was severely underdeveloped at the time of its founding so he brought with him politicians, builders, Nova Scotia timber men, and Englishmen skilled in whipsawing and cutting joists and rafters.