Yes Paterson's! William Paterson was born in Hamilton, Ontario in 1839 and moved to Brantford at the age of fifteen where he immediately commenced working as a clerk in a general store.
George Winter opened Brantford’s first biscuit and confectionery business downtown on Colborne Street in June of 1856. William Paterson partnered up with Henry Leeming to buy the business in 1860. When Leeming left the enterprise to become a customs collector in 1873, Paterson became the sole owner. Paterson's business grew and prospered and he soon became known as Brantford's candy man. By the 1920's about 100,000 pounds of candy including chocolate were produced each day and the factory stretched from Colborne Street to Dalhousie Street:
A set of 50 Baseball cards was issued with Paterson's chocolate bars in 1922:
(Not mine.)
While I have little to no interest in the early Baseball cards issued by American cigarette/tobacco companies, I find the idea of acquiring a star or three - e.g. Ty Cobb, Tris Speaker, Rogers Hornsby, Grover Alexander, Walter Johnson - from a Canadian confectionery a mere hour's drive from my hometown of London rather appealing!
William Paterson was also the first company to issue Hockey cards for kids with a 40 card set of the four NHL teams - Ottawa Senators, Montréal Canadiens, Toronto St. Patricks and Hamilton Tigers - in 1923-24:
(Not mine.)
Paterson then released a 60 card set in 1924-25 when the Montréal Maroons and Boston Bruins joined the NHL.
George Weston Ltd. of Toronto bought William Paterson Limited in 1927. But chocolates and other candy continued being made at the plant until May of 1975 when operations sadly ceased.