Question: Where was the brewery which merged with Coors Brewing Company to form the Molson Coors Brewing Company formed? 

Context paragraphs:
Coors Brewers: Coors Brewers Limited, later known as Molson Coors Brewing Company (UK) Limited is the UK arm of Molson Coors Brewing Company.  Its headquarters is in Burton upon Trent, Staffordshire, the company originates from Bass Brewers Limited.  The company, has gone through many name changes and mergers.

Coors: Coors Brewing Company, or Coors, is now part of the Molson Coors Brewing Company.

List of Molson Coors brands: Molson Coors Brewing Company was created by the merger of two of North America's largest breweries: Molson of Canada, and Coors of the United States, on February 9, 2005.  Coors is responsible for over twenty different brands of beer in North America and the UK.  The main brands are "Coors" and "Killian's".  Molson brands include "Carling Black Label" and "Molson Canadian".

AC Golden Brewing Company: The AC Golden Brewing Company is a subsidiary of MillerCoors, a joint venture between SABMiller and Molson Coors Brewing Company.  Its purpose is to serve as a specialty brewing arm of MillerCoors, in the words of president Glenn Knippenberg, "Our mission for AC Golden is to be a brand incubator for what is now MillerCoors".  The AC Golden Brewery operates in the former pilot brewery of the Coors Brewery.  It debuted its first beer, Herman Joseph's Private Reserve, in 2008.  The company began brewing its seasonal beer, a Vienna Style lager called Winterfest, in 2009.  In April 2010, AC Golden introduced Colorado Native lager in Colorado, an amber lager made with 100% Colorado ingredients.

Miller Brewing Company: The Miller Brewing Company is an American beer brewing company headquartered in Milwaukee, Wisconsin, that was owned until October 11, 2016 by the MillerCoors division of the MillerCoors–Molson Coors joint venture.  The company has brewing facilities in Albany, Georgia; Chippewa Falls, Wisconsin; Fort Worth, Texas; Irwindale, California; Milwaukee, Wisconsin; and Trenton, Ohio.  On July 1, 2008, Miller formed MillerCoors, a joint venture with rival Molson Coors to consolidate the production and distribution of its products in the United States, with each parent company's corporate operations and international operations to remain separate and independent of the joint venture.

Coors Brewing Company: The Coors Brewing Company is a regional division of the world's third-largest brewing company, the Molson Coors Brewing Company.  Until October 11, 2016, the operations in the United States were a joint venture with SABMiller called MillerCoors.  Coors operates a brewery in Golden, Colorado, that is the largest single brewery facility in the world.  Since that time, Coors is a division of Molson Coors.

Molson Brewery: The Molson Brewery was formed in Montreal in 1786.  In 2005 Molson merged with US-based Coors to form Molson Coors Brewing Company, the world's seventh-largest brewing company at that time.  The Canadian division of the Molson Coors Brewing Company is Molson-Coors Canada Inc..  Molson's first brewery was located on the Saint Lawrence River in Montreal where the Molson family continues to maintain its operations today.

Molson Coors Brewing Company: The Molson Coors Brewing Company is a multinational brewing company, formed in 2005 by the merger of Molson of Canada, and Coors of the United States.  It is the world's seventh largest brewer by volume.

Carling brewery: Carling brewery was founded in London, Ontario, Canada in 1818.  In 1952 Carling lager was first sold in the United Kingdom; in the early 1980s it became the UK's most popular beer brand (by volume sold).  The company changed hands numerous times; it was acquired by Canadian Breweries Limited, which was eventually renamed Carling O'Keefe, which merged with Molson, which then merged with Coors to form Molson Coors Brewing Company.  In South Africa the Carling brands are distributed by SABMiller.

MillerCoors: MillerCoors is a beer brewing company in the United States.  In 2002 South African Breweries purchased Miller Brewing Company to create SABMiller.  In 2005, Molson Brewery of Canada and Coors Brewing Company merged to form the Molson Coors Brewing Company.  Then, in 2008, SABMiller and Molson Coors created MillerCoors as a joint venture for their operations in the U.S.  The company is the second-largest brewer in the U.S., after Anheuser-Busch.

Supporting paragraphs: MillerCoors Molson Brewery
Answer: Montreal