While many sources claim that the village of Taiaiako’n was established as an Iroquoian village in the late 1600′s (ironically just when the Europeans arrived), there is much evidence that conflicts with this claim. The City of Toronto website states that the first inhabitants moved into the Toronto area thousands of years ago from the South and started farming corn, beans and squash around 1,400 years ago. These were Iroquoian peoples.
In 2005 there was an article in the Globe and Mail that outlines the deep history of Iroquoian peoples in the southern Ontario and Toronto area.