The only thing I have found on this is a 20s/30s recording (? the same one as JonW ?). I have it on the "Farewell To Ireland" set of CDs by Murty Rabbett & His Gaelic Band. I doubt that this will help at all but the notes say:

"Born Mortimer Rabbett in Oranmore, Co. Galway, he moved to Boston in 1927. Ha sang and played piccolo, flute and whistle whith Dan Sullivan's Shamrock Band. Following the second world war he led his own band. He died and is buried in Boston. Molly Durkin (Tr.11, CD2( is a different take on the wellknowk Murseeen Durkin."

Jon