Looking at Public members Tree - although Cornelius HATTON married Jemima DAVIS in 1842 - there is a step-daughter Johanna age 11 on the 1851 census.

There is a marriage 14 October 1837 at Westbury on Severn, where both Cornelius HATTON and Jenima DAVIS where witnesses, so they knew each other 5 years before their marriage.

William SMITH, batchelor, Collier, residence, Elton, Westbury
father: William SMITH, Collier
married
Hannah RAVENHILL - of full age, Spinster
father: Thomas RAVENHILL - labourer.

At Cornelius' wedding: James HATTON was a witness

On the 1841 census for Ruardean, District 7
Page 6 of 9 is Cornelius

and on 8 of 9 is

Sarah HATTON - 60
Jane HATTON - 20
James HATTON - 19