Casadh an tSúgáin translates pretty much as Twisting of the hay rope.
I stick with my post from 12 April and think that's the one you are looking for. There are other tunes than the Bothy band one, perhaps search for the air as played by pipets. Willie Clancy's playing of it should be online somewhere, for example but plenty of others have been recorded playing it.
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sj