Jim,no what you have to say is interesting.
I believe you have missed the point about Scarborough fair,it was Carthys arrangement,That was in dispute,or so I understand it.
it was his arrangement of Scarborough Fair.,what Carthy did was give the song a new feel,in much the same way that Nic Jones has done with other traditional songs.
this is what many revival singers /musicians have been very good at,developing the music,preventing it from being preserved in aspic.Dick Miles