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.
York East
In 1947, it was redefined to consist of the part of the county of York lying south of the township of Markham, east of Yonge Street and north of the city of Toronto. In 1952, it was redefined to consist of the township of East York and the part of North York township bounded south of Lawrence Avenue and east of the town of Leaside and Leslie Street.