Have you STILL not got it Lizzie? The form is fluid. There is no need for an "1876 version" as a matter of style, although the exact words at different times can be interesting (eg Pretty Peggy of Derby) as can the joinder of words with other tunes (eg the Carthy/Swarb "Byker Hill" - or Willie of Windsbury).

Maybe I should counter-march, with "Reclaim English Folk music" in the style of "Reclaim the night" or even "Slutwalk".

I'll play folk songs - rocked up or not as I please - and I'll also play things that aren't - again rocked up or not as I please, I could probably upset many with my take on "Sally Free and Easy" - but what I would not do is to confuse one for the other.

Perhaps if you'd paid attention at school...