Formation of the league
The league was formed in the fall of 2017 as a result of the Avalon East Senior Hockey League removing the defending league and Herder Memorial Trophy champions; the Harbour Grace Cee Bee Stars from the league with the explanation that a four team league would be the most desirable as opposed to a five team league and that the Cee Bee Stars were the least convenient fit geographically (and competitively) for the membership. Accusations were also made that the Cee Bee Stars were paying some of their players; but they were not investigated and left at the accusation stage. It was thought that the Cee Bee Stars would end up in the Central/West Senior Hockey League which was down to three teams for the 2016-17 season and had openly stated that it would need a fourth team to be able to take to the ice for the 2017-18 season. However, the Cee Bee Stars appealed the decision to Hockey Newfoundland and Labrador.
A meeting has held just prior to September 12, 2017 with the four remaining members of the Avalon East Senior Hockey League, the Cee Bee Stars, and Hockey Newfoundland and Labrador. At this meeting the Cee Bee Stars were apparently accepted back into the league. In very short order the other four teams in the league sent a letter to Rob Leaman of Hockey NL stating that they were withdrawing from the AESHL with the intent of forming a new league with the four teams excluding the Cee Bee Stars to cover the eastern portion of the island. The Cee Bee Stars continued to state that they did not want to play in the CWSHL.
Shortly after the formation of the league; it was announced that the league members were going to have an interlocking schedule with the members of the CWSHL to help give that league the equivalent of having four members and scheduling one game with between each team from the opposite league in the CWSHL arenas. 
In an announcement made on October 2, 2018; the league would be combined with the remaining two members of the Central/West Senior Hockey League (Gander Flyers, and Grand Falls-Windsor Cataracts) to form the Newfoundland Senior Hockey League (2018-, thus ending the league's brief history. However, the leagues would be run as two seperate leagues with interlocking play.
|Allan Cup (National AAA)|
Patton Cup (Western Canada 71-91) - Bolton Cup (Eastern Canada 71-03)
McKenzie Cup (BC-AB) - Rathgaber Cup (SK-MB) - Atlantic Cup (2003-) (NB-NL-NS-PEI)
|Alberta - British Columbia - Manitoba - Newfoundland and Labrador - Northern Ontario - Ontario Hockey Association - Ottawa - Quebec (Also Eastern|
|Alberta: East Central Senior Hockey League (2012-) - North Central Hockey League (1995-) - North Peace Hockey League (also in BC, 1953-) - Ranchland Senior Hockey League (1974-) - Sask/Alta Senior Hockey League (also in SK, 1964-)
Newfoundland and Labrador: - Central Newfoundland Hockey League (Intermediate) (2009-) - Central/West Senior Hockey League (2014-) - East Coast Senior Hockey League (2017-) - Newfoundland West Coast Senior Hockey League (2001-11; 2016-)
Quebec: Laval Senior A Hockey League (2013-) - Ligue de Hockey Cote-Sud (2012-) - Ligue Regionale de Hockey (2016-) - Ligue de Hockey Senior du Lac-au-Fleuve (2017-) - Ligue de Hockey Senior du Richelieu (2005-) - Ligue de Hockey Senior AAA du Quebec (2017-) - Outaouais Senior A Hockey League (2018-)
Saskatchewan: Big Six Senior Hockey League (1959-) - Highway Hockey League (1965-) - Long Lake Senior Hockey League (1978-) - Notekeu Senior Hockey League (1958-) - Qu'Appelle Valley Hockey League (1960-) - Sask/Alta Senior Hockey League (also in Alberta, 1964-) - Saskatchewan Prairie Senior Hockey League (2010-) - Sask East Hockey League (2020-) - Sask West Senior Hockey League (2000-) - Sask Valley Hockey League (1965-) - Saskatchewan Treaty Hockey League (2021-) - Twin Rivers Senior Hockey League (2016-) - Wheatland Senior Hockey League (2004-) - White Mud Senior Hockey League (1995-)
|Alberta: Allan Cup Hockey West/Chinook Hockey League (1969-2020) -Battle River Hockey League (2002-2015) - Prairie Senior Hockey League (also in SK, 1971-1972)
Manitoba: Canadian Central Hockey League (1972-1974) - Central Amateur Senior Hockey League (1975-1989) - Eastman Hockey League (1998-2000) - Hanover Tache Hockey League (1958-2005) - Manitoba Aboriginal Senior Hockey League - Manitoba Assiniboine Hockey League (1974-1983) - Manitoba Eastern Hockey League (1969-1977) - Manitoba Senior Hockey League (2008-2016) - North Interlake Hockey League (1987-1988) - Nor-West Hockey League (1996-1997) - North West Senior Hockey League (2017-) - South Interlake Hockey League (1987-2008) - SouthWest Hockey League (1956-2009) - Winnipeg Senior A Hockey League (mid-1990's)
New Brunswick: Miramichi Senior Hockey League (2000-2004) - Eastern Senior Hockey League (2001-2010) - New Brunswick Chaleur Hockey League (1991-1995) - New Brunswick Senior Hockey League (1968-1991) - North East Senior Hockey League (2011-2018) - North Shore Senior Hockey League (1939-1978) - North Shore Senior Hockey League (1996-2010) - Southern New Brunswick Senior Hockey League (1962-2010)
Nova Scotia: Nova Scotia Senior Hockey League (1982-1996)
Ontario: Eastern Ontario Senior Hockey League (2003-2008) - HNO Senior League (2009-2012) - North Oxford Men's Hockey League (1959-2012) - OHA Senior A Hockey League (1972-1987) - Ottawa District Senior Hockey League (1968-1978) - Ontario Senior AA Hockey League (1983-1988)
Quebec: Ligue Centrale de Hockey (LCH) (1978-2008) - Ligue de Hockey Beauce Bellechase Frontenac (1999-2017) - Ligue de Hockey Senior de la Mauricie (1992-1996) - Ligue de Hockey Senior Majeur du Quebec (1979-82; 1994-96) - Ligue de Hockey Senior de l'Est du Quebec (2005-2010) - Ligue de hockey Senior des Îles de la Madeleine (1991-2005) - Ligue de Hockey Senior A de la Mauricie (2001-2017) - Ligue de Hockey Senior A Inter-Rives (2006-2007) - Ligue de Hockey Senior AA de l'Estrie (2001-2004) - Ligue de Hockey Senior AA de la Cote-Nord (2007-2009) - Ligue de Hockey Senior AA du Saguenay-Lac-St-Jean (2002-2003) - Ligue de Hockey Senior Bas-Saint-Laurent (1994-2005) - Ligue de Hockey Senior des Cantons-de-L'Est (2011-2015) - Ligue de hockey les Cotiers de la Gaspesie (2002-2008) - Ligue de Hockey Senior des Deux Rives (2002-2003) - Ligue de Hockey Senior Provinciale AA (2004-2006) - Ligue de Hockey Senior AA L.D.B. du Quebec (1979-2000) - Ligue de hockey Budweiser de 'est du Quebec (2011-2013) - Outaouais Hockey League (1973-1975) - Promutuel Senior Hockey League (1999-2007) - Republican Hockey League (also in NB, 1976-1987) - Quebec Senior North-East Hockey League (2003-2007)
Saskatchewan: Beaver Lakes Hockey League (2006-2018) - Fishing Lake Hockey League (1953-2015) - Fort Carlton Senior Hockey League (1971-2019) - Last Mountain Hockey League (1954-1978) - North Saskatchewan River Hockey League (1995-2015) - Pasquia Hockey League (1993-2009) - Three Rivers Hockey League (1980's) - Treaty Six Hockey League (2004-2007) - Triangle Hockey League (1965-2020) - Whiska Creek Hockey League (1980's-90's) - Wild Goose Hockey League (1954-2008) - Yellowhead Hockey League (1980-2000)