Thank you for that. I also did some digging, and compared some photos. It turns out that Uncle Hugh is Hugh Bain - Annabella's. mothers brother. It has been really difficult to confirm some facts but it looks at though he married Janet Ann Gillies who died in Green Valley, Arizona. Her brother is William Gillies. They both were born around liverpool, England and William also died in Green Valley. William married a woman called Elizabeth.
It is possible that William and Elizabeth had 2 sons Bruce and Malcom - but I have still to ascertain the facts here. But so it has been the most logical explanation.
I would love to know for sure.