From 1961 until 1969, the Cornwall Royals were successful members of the Central Junior A Hockey League (CJHL).

After an application to join the OHL was rejected, the franchise became one of the inaugural teams of the Quebec Major Junior Hockey League in 1969.

The Cornwall Royals were one of the league's premier teams during its tenure in the QMJHL, winning 3 Memorial Cup titles.

(Multiple years in parentheses) *1982–83 coaches Bob Kilger, Bill Murphy, Gord Woods, Jocelyn Guevremont The Cornwall Royals graduated 55 players to the National Hockey League.

Three alumni of the Cornwall Royals have been enshrined in the Hockey Hall of Fame, including Billy Smith, Dale Hawerchuk, and Doug Gilmour.

[citation needed] The Cornwall Royals played out of the Water Street Arena from 1969 to 1976, while in the QMJHL.

The Arena, renamed in honour of Si Miller, the city's Director of Parks and Recreation for more than 30 years, was torn down in 2012.

[1] From 1976 to 1992, the Royals played out for the Cornwall Civic Complex, located across the road from their previous arena.