Sorry, my last post was intended to contribute to the debate on 'folk rock' and whether it works as a genre. We can look elsewhere for two way influences: I have heard UK 'folk' that features the banjo, said to be an instrument with African origins often made and played by Black Americans in the days of slavery. I know Pepys brought a guitar to England way back, but I suspect that this instrument became popular in the UK because of US influence via both black blues and white popular US music. Lonnie Donnigan probably something like a starting place.

Not disrespecting Sandman's view: I especially dislike folk rock when they don't get the sound balance right.