Thank you, Tom, for your help. I have found two more children to Michael and Catherine Barrett that you do not have: Margaret Barrett born 29 Jun 1922 and John Barrett born 29 Feb 1924. It is my understanding that Margaret Barrett moved to England, as my Aunt Eileen Barrett Zacharon would write to her, according to my cousin Eugene Sullivan. I believe she is still in England. I am not sure about the whereabouts of John, or if he is still alive.
All this information will be of great interest to my family that I will see in June for the wedding of my neice.
I am now very eager to come back to Ireland to do more research and take photos of all the locations where the family lived/worked, etc.