It was a founding member of the League of Ireland in 1921 , and it is one of only two clubs to have been members of the League of Ireland since its inception ( the other being Shelbourne ) , and it is the only club to have been ever-present in the top division of the league .
It was a founding member of the League of Ireland in 1921 . The club is one of only two clubs to have been members of the League of Ireland since it was founded ( the other being Shelbourne ) .