After a family discussion we have found out some more facts about Gertrude.
Gertrude was possibly one of seven children. We don't know the birth order, but we do know some of their names: Gladys - who emigrated to Canada. Possibly to find work. Charlotte/Lottie - married (Al)Bert late in life, had no children and worked for the tobacco company Wills'. Bert - Ran a pub in Clifton, Bristol opposite what was then the Spa Hotel. Another sister, (name unknown) was known to be living in Bridgenorth in sometime in the 1970's.
There is a chance that Gertrude was one of, if not the youngest child in the family.
This isn't much more information, but hopefully there is someone out there who knows more about Gertrude and her family.