Hello,
It is wonderful to actually hear from someone related to me!
I do not know if there are any living relatives in the area. I believe Nora and Jackie had children. They may be still in the area. There is a heritage centre on Valentia Island and you may be able to get more information. When I tried, the information available was quite limited. I met Nora and Jackie many years ago. You may know more about them than me. Do you know any more about the family and the siblings of John and his father, also John? I know a little but I do not want to tell you what you may already know, but I will be happy to give you what I can.