GerryB,Just found this rather sad posting from Sean Quinn on the IRTRAD list:
Listers will be saddened to learn of the sudden passing, Belfast, Wednesday 7th August 2002, of our dear friend Harry O'Prey (HOP). I introduced Harry to the list a few years ago and he since entertained us all with his wisdom and wit.
He was a talented pianist, guitarist and singer as well as a Gaelic scholar, authority on songs in Irish and English, and prolific photographer. He played piano with numerous ceili bands.
Tragically, he buried his dear wife Marceline less than a fortnight ago. He will be sadly missed within the Irish language and music communities.
Ar dheis De go raibh a anam.