Sian, if you happen to get over in the Spring there is the OGGA Welsh Festival in April. It will be in Kingston, ON this year, and I'll let you know the exact date as soon as I find it. There is a Nosen Lawen [Merry Evening] on Friday night, a Concert on Saturday, and the Cymanfa on Sunday (Fewer days than the WNGGA affair in Aug/Sept and also a bit less expensive, depending on the rate of exchange). There is almost always a Male Voice Choir for the Concert. I wasn't able to make it myself last year, but in 2000 they had Cor Meibion Tredegar who did a lovely job.
From what I understand, Cymdeithas Madog is doing quite nicely, and I think you have a right to be very proud of your involvement in its founding. It has provided and continues to provide a real service.
For those who don't know, but may be interested, Cymdeithas Madog [The Madog Society], the Welsh Studies Institute of North America [www.madog.org] provides intensive instruction in the Welsh language through Cwrs Cymraeg [The Welsh Language Course], their residential language course and also provides casette tapes for learners.(It is named for Prince Madog the _real_ discoverer of the North American continent - before all those Vikings and Italians, etc.) ;-)
Dave Williams