In September, 1957, the Montreal Irish played their very first match and by the following season, were already dominating the provincial league. Less than a decade later, membership had grown enough to field two senior men's teams and, by 1969, the Club invested in their own clubhouse and fields in Ste-Julie. That same year, the Club took home both the Senior Cup and Provincial League title, and also supplied Quebec's provincial team with six of the seven players who formed the back line. 

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In the Summer of 1975, the female partners and friends of the Irish players challenged them to a fun game of rugby. At the time, very few women had attempted the sport. Though based in fun, the women showed proficiency for the game and the men began coaching what is rumored to be the first organized women's rugby team in Canada!​