Andy,

I believe the ultimate wedding processional tune to be "Fanny Power" by Turlough O'Carolan. I've played it at dozens of weddings and it's always a hit. It was written for the wedding of a friend of Carolan's and sets exactly the right mood!. If you can't locate a good arrangement, let me know and I'll email you one of mine.

A lot of O'Carolan's music is suited to weddings. I also like to play Bach (Jesu Joy) and many lesser known folk melodies (including my own!). Dave Panting (of Rawlings Cross) has a beautiful tune called "The Wedding Gift".

Hope that's some help..

EW