Sandra, many, many thanks for the information. Yes, I'm afraid the information about Gerald is a bit confusing. I thought Brooks was like a middle name but it seems to be a family name. I wonder why Gerald changed the name so many times...? Maybe he was trying to disconnect from roots? Why? The family name McEllistrim could be the family name of his mum Julia? Do you have any idea where I could find more information?
Again, thank you very much. You opened in front of me another way to look for.