"The Black Rogue" is only one of many titles for the tune, and it is not the oldest one. Check |1486| in the Irish tune index on my website (and Johnnie MacGill in the Scots Tunes Index). ABCs of three versions are T020A-C in the Miscellaneous tune file there, and T020D is one half of one copy of "The Basket of Oysters" (the other half usually being "Greensleeves"). Whether the original was the Scots "Johnnie MacGill" or the Irish "Blarney Castle" I don't know. Both appeared about the same time. The Scots claim that John MacGill composed it, about which I have considerable doubt. (Note there are two other tunes called "Johnnie Macgill, also.)