Hopefully you can see this?
https://search.findmypast.co.uk/record? ... 0045%2F138
The John Barnes who died aged 75 in Poplar is in my family tree but I couldn't help noticing the Gwendoline Barnes who died aged just 1 on the same page. Given the Poplar entry it could be that she may be a relative, too, but there is only this death notice and no birth record to cross reference. Given this with the mother's maiden name I could see if she belongs in my tree or not, yes?