I remember this pair. The girl was Rosemary Maguire and was very striking looking.The man was O'Prey (I think). Between them they sang in something like five languages. Their soiund was quite unique due to the fact that they harmonised on the guitars as well as the voices.
They sere very big in the Trad. / Folk scene especially in Northern Ireland but they sang in various venues throughout Ireland.
I believe that the man was still singing and playing until fairly recently but I have heard nothing of Rosemary Maguire.
Someone apart from myself must remember them.
GerryB