"Ceilidh" is a Scottish word, but for reasons which have been discussed exhaustively elsewhere the word has been adopted for a particular style of English folk dancing. South of the Border ceilidhs are very seldom Scottish, unless specifically advertised as such. Of course you sometimes get people turning up in Highland dress, but if you call it a "barn dance" they will turn up in cowboy hats and toy six-shooters, so you can't win.