Hello Fionnuala. Unfortunately I cannot assist, because my family comes from Naousa while all the other branches with the same surname come from Parikia. So I do not know the persons you are talking about.
By the way, as your name Fionnuala does not seem to me to be very common. Many years ago I was in Dublin and I came across a book written by a woman called Fionnuala. It was the story of her family (she had a husband and two children) and more particularly the part of their life in Paros, where they came in the '70s and stayed for many years, considering that it was a kind of a small paradise on the earth (although many of us share this opinion). Do you have anything in common with this story?