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.
Draperstown Celtic F.C. Draperstown Celtic is a football club from the village of Draperstown, County Londonderry, Northern Ireland. The club, founded in 1968, plays its home matches at Cahore Playing Fields. Club colours are green and white.