Not weighing in with an opinion, but I just received a book from Helen that I purchased through the auction. It is "The Dance Music of Willie Clancy" by Pat Mitchell. On page 9, which is the introduction to the book there is the following:

He learned step-dancing from Thady Casey who had danced barefoot to Garrett Barry's playing when a young boy. As well as being a dancing masdter, Thady played the fiddle and the tambourine, or bodhrán as it is now more commonly known.

He is describing Willie Clancy's childhood.

Just an FYI.

Mick