Hi

for what it's worth....

I can conform that Humphrey the Shoemaker 1841 became Humphrey the Grocer in 1851

This appears to be Priscilla baptism

1791 ABRAHALL Priscilla John Martha Aston Ingham

I can find no record of her death or Mary Ann's birth....

Humphrey had remarried by 1841 so maybe Mary Ann was living with other relatives by 1841, but I can find no trace of that either. Presumably, her birth certificate quotes Priscilla as her mother? (What out there's a Humphrey about!)

Brian