I lived/worked in Ottawa nearly forty years ago. The main folk event that remains in my rather feeble memory is that it is where I first saw The Clancy's and Tommy Makim perform live. That night made me a lifelong fan of Irish music, but the venue is long forgotten.
In those days Ottawa did not have a great deal of nightlife, but if you crossed the river to Hull, it would be hopping. Yes jOhn, we used to have a Hull in Canada but someone changed the name. :-}
                Sandy