The Watersons are from Hull which is in East Yorkshire and Holmfirth is in West Yorkshire and they way they speak in the two areas is quite different.

My wife comes from near Holmfirth and I have always heard it sung Pratty Flowers round there. The tune is also popular with brass bands locally.

I now live in Middlesbrough (North Yorkshire) and how they speak here is different again. As someone said earlier, Yorkshire is a large county and accents (and dialect, such as is left) varies quite a lot across the county.