A portion of the thoroughfare located in the largely anglophone city of Westmount, between Clarke and Atwater, retains the name "Boulevard Dorchester", as does a portion in the mainly French-speaking Montréal-Est, where it is known as "Rue Dorchester."
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Shortly after Jean Drapeau was elected mayor in 1954, his administration ordered the destruction of hundreds of buildings along Dorchester.
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From the time of its formal naming in 1844, the street was known as "Dorchester Boulevard" in honour of Guy Carleton, 1st Baron Dorchester (1724–1808), Governor of the Province of Quebec and Governor General of Canada.
René Descartes | Wilshire Boulevard | Sunset Boulevard | Roxas Boulevard | René Char | René Magritte | François-René de Chateaubriand | René Goscinny | Leon René | René Jacobs | Rene Daalder | Rene Russo | Hollywood Boulevard | René Lévesque | Junipero Serra Boulevard | Sunset Boulevard (musical) | Rene Requiestas | René Kollo | René Clausen | René Clair | Pico Boulevard | Octavia Boulevard | MacArthur Boulevard | Rene Portland | René Clemencic | Rene Auberjonois | Man o' War Boulevard | Boulevard des Allumettières | San Vicente Boulevard | René Higuita |
The street address of Maison Radio-Canada is 1400 René Lévesque Boulevard East, fittingly named for former premier René Lévesque, who was once a reporter and commentator for the CBC.