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Allan Gordon Smith (1881-1951) of S. Smith and Son
1881 Q1. Allan Gordon Smith (note the lack of hyphen) born at Wandsworth the son of Samuel Smith, Junior.
Studied clock-making in Switzerland and then returned to the family business of S. Smith and Son.
1914 Director of S. Smith and Sons. Living at Hook Farm, Aldingbourne, Sussex. Manager of the Motor Accessories Branch. 
1920 Director of the company 
1951 Obituary