Les, a lot of Cats's points simply reiterate folklore and have no historical evidence.

I'm quoting from the article, written by Derek Schofield (EDS summer 2005):

"Forty years ago, the only English traditional, or revival, dance group who blacked up were the Britania Coco-nut Dancers from Bacup."

"There are references to people blacking up as a form of disguise in popular custom, although in Heaney and Forrest's book 'Annals of Early Morris', there is only one reference to black-faced morris dancers in the period they studied (up to 1750), and that is from the mid-sixteenth century."

The article goes on to discuss how black-faced minstrelsy took hold in America from the early 19th century, and eventually made its way to Britain and enjoyed huge popularity here by the turn of the 20th century: "no village concert was complete without a few minstrel songs."

The piece goes on to discuss the incorporation of blacking up into "traditional" events: "There would seem to be little doubt that the black faces of the traditional morris dance groups of the Welsh Border counties were at least influenced by minstrelsy. The occasional use of banjoes, bones and tambourines in these morris dances cannot be mere coincidence."

I apologise for the brief and piecemeal nature of these quotes, and for the lack of context (especially to Derek) - sadly the whole article is not available on-line. But I can tell you that it makes a pretty convincing case for the influence of minstrelsy on blacking up.

So then the question is, if blacking up and minstrelsy were once intrinsically linked, does it matter today?