I have checked this on DT, where it appears under P -- title "Piper Of Dundee". This admittedly gives "rougey"; but if you click on "Play" and the stave with the words comes up, it is correctly rendered as "roguey". The latter, as I point out above, must obviously be the semantically correct spelling, and 'rougey' a typo: he was a rogue; he didn't wear rouge!

Don't expect anyone will ever get round to emending it on DT, though: heigh-ho! woe·&·alas!

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