Highway 7 - Kitchener to Guelph

[Coke6pk]

Where did the "Greater Golden Horseshoe" come from? Is that a Provincial Designation, or something a Wiki editor made up?

Using Wiki alone, we are listed as Southwestern Ontario. https://en.wikipedia.org/wiki/Southwestern_Ontario

(Not trying to be difficult, just legitimately curious where the current Provincial government pictures us.)

Coke