Source: John McFadden in O’Neill’s Music of Ireland1
Most commonly played in D dorian nowadays. O’Neill’s account of McFadden from Irish Minstrels and Musicians can be found here.
Francis O’Neill, O’Neill’s Music of Ireland: Eighteen Hundred and Fifty Melodies. Chicago, Lyon & Healy, 1903, #1178, p.222.
Also appears in:
Francis O’Neill, The Dance Music of Ireland (1001 Gems). Chicago, Lyon & Healy, 1907, #458, p.89.