Thank you for your ideas, Rachel & Phoenix.

I'll try to explain the problem without identifying living people.

It all stems from this photo of my parent's wedding.


My parent identifies the tiny lady on the far left (and other photos of the tiny lady) as "mother" (although I now know that his mother would have been adopted) and says that his "mother's" name was Beatrice Winifred Rathbone.

The problem is that I have made contact with quite a few Rathbones, who all say that the tiny lady in the wedding photo is not Beatrice, but is Beatrice's sister, Maud/e Mary/Maria, and that the lady with the little girl and also with the dog is Beatrice.

The little girl in the second photo is the person who was once introduced to me as my father's sister, and who was Beatrice's daughter.

This is why I am confused!!