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Predecessor firms and mergers

Professional services firms have historically been built through mergers — both big and small.

1845   Deloitte & Co. founded in London
1858   P.S. Ross opens office in Montreal
1886   C.W. Haskins founded in New York
1899   George A. Touche founded firm in London, England
1902   McDonald Nicholson & Co., Toronto
1908   Greggs & Co., Saskatoon
1909   George A. Touche & Co. comes to Canada, opening Toronto office
1909   J.A. Larue, Quebec
1909   W. Denison, Ottawa
1910   Fred Page Higgins, Toronto
1911   Larue & Trudel becomes the first francophone accountancy firm in Quebec
1911-1914   G.A. Touche & Co. Canada expands to Montreal, Vancouver, Winnipeg, Calgary and Edmonton
1912   Deloitte, Plender & Griffiths & Co. expands to Montreal and Vancouver
1912   Patrinquin & Johnstone, Edmonton
1912   Pope, Rooke & Grant, Regina
1912   James G. Ross named Chief Paymaster
1914   McCannell Bros. & Co., Calgary and Edmonton
1919   Webb Read & Co., Winnipeg
1927   Saunders & Cameron, Toronto
1920   F.G. Winspear, Edmonton
1920   First women admitted to Quebec Society of Accountants
1932   Stevenson, Walker & Knowles, Montreal
1939   Macdonald & Healey, Windsor
1951   Ralph C. Cowle, London, Ont.
1952   Robert Bell & Co., Vancouver
1952   W.T. Scott & Co., Saskatoon
1952   Hostrand Ellis & Quelch, Victoria
1952   Paisley Wallace & Co., Toronto
1953   Craig Lunn, Vancouver
1953   Welch Anderson & Co., Toronto
1954   Watson Ewing & Rumball, Vancouver
1954   Deloitte Plender Haskins & Sells becomes autonomous Canadian firm
1956   G.K. Mackenzie, St. John’s
1956   Courey & Cie, Laval
1956   W.M. Hurley, Manitoba
1958   George A. Touche & Co. merges with P.S. Ross & Sons to form Ross, Touche & Co. (later to change its name to Touche Ross & Co.)
1959   Umbrella association formed: Winspear Hamilton, Anderson & Co., Fred P. Higgins, Stevenson Blakely Blunt & Co., H.R. Doane, Wm. Hurley & Co. later to merge into Deloitte Haskins & Sells Rigby, Johnson & Co., Quesnel
1960   Worldwide firm adopts name Touche Ross Bailey & Smart  
1960   Harris Fingarson & Co., Saskatoon 
1961   R. Blackmore & Co., Moncton 
1962   Smith Metherell & Jackson, Hamilton 
1962   Colins Graff & Co., Kingsville 
1962   Charette Fortier Harwey & Cie, Quebec  
1963   Gunright & Hanright, Halifax 
1963   F.R. Balmer 
1964   P.E. Bonnier & Cie, Montreal 
1965   W.W. Ruskin & Associates, Vancouver 
1967   The Sibbald Group, Calgary and Edmonton 
1967   First Deloitte management consulting group formed in Montreal 
1969   Touche Ross & Co. name adopted globally 
1971   Lloyd Newth & Associates, Toronto 
1971   Chadwick Potts & Co., Vancouver
1972   Heffernan Eichron Kidner Montgomery, Kitchener  
1972   Balmer & Baston, Toronto
1973   Butler Dooley & Metzger, Kitchener 
1973   John. J. Browne & Co., Vancouver
1975   Bradwith Hughes & Associates, Guelph 
1976   John G. Parsons, St. John’s
1976   Smiley Scott & Ralph, St. Catharines
1977   Kuipers & Stevens, Halifax 
1979   Frank Wolman & Associates, Toronto 
1979   Moir Goodwin & Co., Victoria 
1980   Smith Nicholson & Lane, Hamilton 
1981   National merger of Touche Ross and Gardner McDonald & Co.  
1982   Davison & Lesonsky, Windsor 
1982   D.K. Partners, Vancouver 
1982   Societe Generale d’Information Inc., Montreal  
1983   Birkness Bannister & Gray, North York 
1983   Atkinson Leach & Neill, London, Ont. 
1983   Gauthier Tremblay Legault Boivin Dallaire Turcotte & Associates, Chicoutimi 
1986   P.S.S., Ottawa 
1988   Browning Smith Inc., Edmonton 
1990   Merger of Touche Ross and Deloitte Haskins & Sells Samson Belair
1999   Part acquisition of Morneau Sobeco  
2000   Newell Group, Calgary, Edmonton, Vancouver, Regina, Winnipeg
2002   Integration with Andersen Canada