I do apologise- the John in Notts is too young- he was born in Sandhutton according to 1891 but I realise that the ages don't work!
There are deaths 1881-1891 which are possibles for John, Mary Ann and young James so that won't help.
You mention an Airey witness at the marriage- who was the other one- would that help?
I think there is a suggestion of a birth certificate for the first child to check details re addresses, occupations there .. otherwise you may have to wait for 1911 census

best wishes
heywood