In the summer of 2016, the GMOHL merged into the Provincial Junior Hockey League and became the Carruthers Division in the Northern Conference.

Dating back to the late 1940s, the Georgian Bay League featured teams like the Owen Sound Greys, Barrie Colts, and Collingwood Blues.

As the top tier teams of the group were promoted to Junior B, teams to the north entered the loop in the 1960s - Powassan North Stars, Bracebridge Bears, Huntsville Blair McCann, Parry Sound Shamrocks, Gravenhurst Indians, and so on.

In 1971, the South-Central Junior D Hockey League was formed with teams like the Bradford Blues, Alliston Hornets, Schomberg Cougars, and Stayner Siskins.

In 1974, 1975, 1976, and 1977, the Stayner Siskins competed on behalf of the then Central league for the All-Ontario Junior D title, victorious in 1974 and 1976.