Hi Lesley,
I have found a close match on the 1881 census in Hull, Mary was born in Market Weighton so it is in the right area of East Yorkshire.
I have seen several trees on Ancestry with Hannah mentioned but they are all private.
Hope this sheds some light on your query.
I can't attach the snip for some reason as the option is missing

If you want it, send your email address by personal message and I can send it to you.
Surname is
Johson and his Christian name is spelt
Jhon, (this could be Jonathon) or, you may be able to find them now
Carol