In what year was the team founded that won the 1956-1957 Irish League championship?
1956–57 Irish League The Irish League in season 1956–57 comprised 12 teams, and Glenavon won the championship.
Carrickfergus Knights The Carrickfergus Knights is an American Football team and Ireland's longest running American Football club. Founded in 1993 by Eddie Kelly, the Knights have been National Champions 3 times, in 1997, 1998 and 2002 and have competed in 9 of the 15 championship games.