Wikipedia
Peel—Dufferin—Simcoe
Peel—Dufferin—Simcoe was a federal electoral district represented in the Canadian House of Commons from 1968 to 1979. It was located in the province of Ontario. This riding was created in 1966 from parts of Peel—Dufferin riding.
It consisted of the Townships of Mono and Mulmur in the County of Dufferin, the Townships of Albion, Caledon, Chinguacousy and Toronto Gore in the County of Peel, and, in the county of Simcoe, the Town of Alliston and the Townships of Adjala, Tosorontio and Essa (excluding the Village of Cookstown), and the Town of Orangeville.
The electoral district was abolished in 1976 when it was redistributed between Brampton—Halton Hills, Dufferin—Wellington, Simcoe South and York—Peel ridings.