William Lyon Mackenzie
The township of York, which until 1793 had been known as "Toronto", incorporated as a city (meaning it received local self-government) on March 6, 1834, taking the name of "the City of Toronto" to distinguish it from New York City and the dozen other settlements named 'York' in Upper Canada. The Tories and the Reformers fielded candidates for Toronto's first municipal election, held on March 27, 1834, with the Reformers winning a majority on the Toronto City Council. Mackenzie was elected as an alderman. The City Council then met to decide who should become mayor. Mackenzie, after being nominated by Franklin Jackes, defeated John Rolph in the vote and thereby became the first Mayor of Toronto.
Milliken, Ontario
In 1954, the area south of Steeles Avenue was severed from York County, forming the Municipality of Metropolitan Toronto. As the community was situated along Steeles Avenue, it was split between the two county/regional governments. The southern portion of the community, Milliken, became a part of Metropolitan Toronto, whereas the northern portion of the community, Milliken Mills, remained with York County (reorganized into the Regional Municipality of York in 1971).