1894
NWFA Clubs
Foundation teams included: Mersey, Latrobe, Devonport, Wesley Vale, and Ulverstone.
1906
North Western Football Association
Devonport, Mersey, Latrobe, Wesley Vale, Ulverstone.
1907
North Western Football Association
Clubs: Devonport, Mersey, Latrobe, Ulverstone, Penguin, Burnie, Wesly Vale withdrew in May.
1907
Rosehill Cup
Clubs: Oatlands, Campbell Town, Ulverstone, Mersey.
1908
North Western Football Association
Clubs: Mersey red & white, Devonport, Latrobe, Ulverstone.
1910
NWFU
The NWFU became responsible for the management of football in the North-West region.
Competing clubs in the inaugural season were: Burnie, Latrobe, Mersey, and Ulverstone.
It appears that several teams joined at varying times thereafter namely: A.P.P.M., Circular Head, Cooee, Devonport, Diggers, East Devonport, Penguin, Smithton and Wynyard,
1910
NWFU Roster started 14 May
First roster matches played on 14th May. With teams from Latrobe, Mersey, Ulverstone, Penguin and Wesley Vale competing. Although Wesley Vale withdrew early in the season.
1910
North Western Football Union
Clubs: Ulverstone, Mersey, Penguin, Latrobe, Mengha.
1911
NWFU Clubs
The make-up of the NWFU had chanced from the previous season ie: Mersey, Latrobe, Ulverstone and Devonport joined from a local Junior association. Penguin withdrew from the Union and entered the Burnie Football League.
1912
North Western Football Association
Mersey was captained by K. Appleby and "Snowy" Mahoney, an intelligent ruckman who also played with Mersey.
1913
NWFU Premiers
Latrobe declared Premiers and Mersey runners-up.