Maeve

Yes - I saw that first clip. As you probably know, Twomey/O Tuama is a common surname in Ireland - and the tradition of using "Og" to distinguish a son from his father of the same name is also very common. I don't know if there is any connection in this case.

Sean Og's enduring impact seems to have been through the Coisir Cheoil booklets/book which were extensively used in schools. He also presented and sang on radio and TV and adjudicated at singing competitions of various types. There's probably archive material available from RTE - which is why I suggested a visit to ITMA.

Regards