Beaumont was a make of mid-size automobile

Automobile

An automobile, autocar, motor car or car is a wheeled motor vehicle used for transporting passengers, which also carries its own engine or motor...

s produced by General Motors

General Motors

General Motors Company , commonly known as GM, formerly incorporated as General Motors Corporation, is an American multinational automotive corporation headquartered in Detroit, Michigan and the world's second-largest automaker in 2010...

 of Canada from 1966 to 1969.
The Beaumont car grew out of the 1964-65 Acadian

Acadian (automobile)

Acadian was a make of automobile produced by General Motors of Canada from 1962 to 1971. The Acadian was introduced so that Canadian Pontiac-Buick dealers would have a compact model to sell, since the Pontiac Tempest was unavailable in Canada...

 Beaumont model, which was based on the contemporary Chevrolet Chevy II (Nova), then Chevelle. These Beaumonts featured the Chevrolet Chevelle body with minor styling revisions, including different taillights and a Pontiac-style split grille. The interior used the dash panel from the (U.S.) Pontiac Tempest

Pontiac Tempest

The Pontiac Tempest was an entry-level compact produced by the Pontiac Motor Division of General Motors, introduced in September 1960 for the 1961 model year....

/LeMans/GTO series.

From 1966, the Acadian name was dropped and Beaumont became a standalone marque, still sold by Pontiac-Buick dealers.