Galwegians opened an early account in the Youths department with a 3 points to 2 lead (bagging the coveted Langan Trophy) and after the Galwegians Women's side beat their Corinthians counterparts 10-7 in a game of Tag rugby, 'Wegians took a 4-2 overall lead.
Corinthians bounced back when it came to adult rugby though with their Under-20s, 2nds and 3rds all registering solid wins to leave the overall score, Corinthians 5 Galwegians 4.
Going into the final game, the men's senior clash, it was all to play for. Corinthians held the lead in the competition by a single point but when Galwegians beat them 14-10, it went down to tries scored in the senior game.
Galwegians' second try, scored by Derek Boyd, was enough to tip the scales in their favour - two tries to one - and so the Glynn Cup has returned to Glenina for the first time since 1992.
Speaking afterwards, Connacht President Michael Grealish said: "I'm thrilled with the event and how well it has worked out. It's fantastic to see this competition taking place once again and the new format certainly worked well.
"I'm sure everyone involved is already looking forward to next year's competition which I hope will prove to be just as exciting.
"I'd like to compliment Eugene Doyle, President of Corinthians, and Mick Casserly, President of Galwegians, and the organising committees from both clubs for putting together this festival of rugby.
"I'd also like to congratulate Galwegians RFC on claiming the title for the first time in over a decade, it's been a long wait but a thoroughly deserved win.
"I'd also like to express my sincere thanks to the Glynn family for their involvement and I hope that now that this competition has been restarted, it will continue for many years to come."