Originally posted by Karen
I would NOT include that note in the invitation. I would make no mention of it being a pagan ceremony, as that WILL upset some people. An invitation to your wedding can be lovely, heartfelt and sincere without mentioning any denomination or lack thereof.

I would write your uncle a special letter to go in with his invitation, stating how you feel. Explain that you respect his right to practice his religion, and that you hope he will respect your wishes to have the wedding of your own dreams - which includes him not injecting his beliefs into your ceremony or day.

You can even go so far as to tell him that your day would be incomplete without him and his wife (no need to emphasize which of the two you'd miss), and that you would understand if they elected to skip the ceremony itself and just come to the celebration afterwards.

Be gracious and upfront, and early, and I wish you the best.

Neat dress - but it looks warm - are you getting married in cooler weather I hope?
Well said! I agree.