1970 — GLA is started by Bill Meighen, Bill Maitland and Ray Broadworth to provide lacrosse for residents of the Gloucester Township
(competitive teams play as the Gloucester Rangers in the Seaway Valley Lacrosse League)
1974 — GLA bantams win the Ontario Bantam E championships
1975 — GLA bantams win the OLA Bantam C championships vs Whitby
1976 — GLA competitive teams become the Gloucester Griffins
GLA puts all players in their HL and initiate City wide teams in South Ottawa, Alta Vista, Canterbury, South Gloucester, Blackburn and North Gloucester
GLA initiates and hosts the first ever Bantam National Championship to supplement the CLA championships at the PW and Midget levels and convinces the RCMP Commissioner to donate the Commissioner’s Cup to be emblematic of the Canadian Bantam supremacy. Teams from PEI, NB, NS, Sask., BC, Man. And Ont. Participate — Rexdale wins the A Championship.
1977 — GLA midgets attend Midget National Championships in Brantford and advance to finish 6th in the A Division.
1978 — Gloucester Griffins Junior Lacrosse Club begins operations in the Eastern division of the Ontario Junior B Lacrosse League
1979 — GLA peewees attend Canadian National Pee Wee Championships in Peterborough, lose in C semi-finals
1980 — GLA peewees attend Canadian National Pee Wee Championships in Burnaby, win the bronze in the C division.
1982 — GLA bantams win the Bantam National Qualifier tournament in the B division
GLA bantams attend Canadian National Bantam Championships in Burlington and advance to finish 6th in the A division.
1983 Bantam Provincial Silver medalist D division (hosted in Nepean), National Gold Medalist C division (hosted in Gloucester).
1984 — GLA hosts the Canadian National Midget Championships.