I was searching with my son for a family project and came across your message. Not sure if you are still working on this topic.
My father was brought up by his grandmother Emily Ann Smith, I met her in the 1960s. She was married to Harry Smith. Emily had a number of daughters (3) one of whom I knew, Ena Maskell.
My father changed his name to from Smith to Dullforce on the request of his grandmother Emily Ann Smith.
If you have any specific questions that relate to this topic, I can ask my father.