Alice: Thanks for the post. I've known for some time that Paddy had made a collection of tapes of some 500 tunes, many of them never recorded by anyone else, but I didn't know anyone had transcribed them.

I think there's a mistake, though. The beginning of the document you link to refers to "Paddy O'Brien of Co. Tipperary." Elsewhere in the Ceolas site, though, they mention "Paddy O'Brien, the accordion player from Offaly," which is I think is correct – unless there are 2 prominent Irish musicians named Paddy O'Brien, which I doubt.

Anyway, he now lives in Minneapolis.

There is a profile of Paddy given at the site for his band, Chulrua.