Your post just came up in my google search. It has been a wonderful source of information for me as my husbands GGGG grandfather was John Dyball descending from a child with his first wife Catherine Birmingham.
I am very pleased for you. Please do verify everything
An update on Mary Ann Dyball - this is a record of her sister Caroline entering the workhouse in December 1891, from ancestry:https://www.ancestry.co.uk/interactive/ ... 4613-00044
It states that her sister is Mrs Dyball and gives her address, which nicely ties in with a Mary Dyball living at that address in the 1891 census (who takes ten years off her age!).