The corps was related to the 5th Column Royal Canadian Army Service Corps. In 1956 the corps was invited to participate in a competition sponsored by the Toronto Argonauts Football Club. To avoid conflicts with the musicians' union and Canadian army regulations, the corps appeared in clown costumes and took the name "Jolly Jesters." Due to the popularity of the name and uniform, the corps appeared the following year in the same uniforms.
In 1960 the corps changed uniforms, abandoning the clown uniform for dress blues. Accordingly the corps' name changed to "The Jesters".
corpsreps.com history entry for Jolly Jesters - corpsreps.com