This is a traditional swedish wedding march. The original title is "Brudmarsch från Delsbo". Delsbo is small town in Dalarna. I´ve heard this tune mostly played on the fiddle but I think it works fine on the tin whistle too!
Conjures up the happy couple coming slowly down the aisle, which I suppose it was made to do. A fine tune, will have to learn it.
Re: March From Delsbo
I have just arranged Bytt-Lasses Brudmarsch, a Finnish bridal march. You can hear it here: