Hello Corky
I may have found James earlier but there are a number of question marks.
In Liverpool in 1881 he said he was 34 and born in Manchester. He had married in 1874 and said his father was Joseph. In subsequent censuses he said he was born in Partington. You will know that Manchester is the nearest 'big' town to Partington. But before 1974 Partington was in Cheshire. In 1870 the Manchester Ship Canal had not been built and Partington was just over a mile's walk from Sinderland - of which more in a minute. Sinderland is just over a mile from Dunham Town - the hamlet just outside the grounds of Dunham Hall. In fact Sinderland is a hamlet within the township of Dunham Massey. All are in the parish of Bowdon.
The major problem is I cannot find a James Howard with a father called Joseph.
However you mentioned in your first post that family records say that James worked at Dunham Hall in the 1870s. In 1871 there is a 25 yr old James Howard, a Farm Servant, living at 9, Sinderland Lane in Dunham with a family headed by a Joseph and Mary Dawson. The Dawson children were there plus a domestic servant and other farm servants.
Ten years earlier at Back Lane - also in Dunham Massey - there is a 17yr old James Howard living with his younger brother Samuel and their parents William and Mary Howard. The whole family were born in Dunham. James was an Ag Lab like his father. William was aged 44 and Mary aged 41.
Could a 17yr old in 1851 be a 34 yr old in 1881?? This James' father is William not Joseph.
In 1851 the Howard family are in the hamlet of Sinderland - nearer Partington???
I tried another avenue looking for Joseph Howard in this particular area with no luck. However the Tithe Apportionments - mid 1840s - show a William Howard as an occupier of property in the township of Partington.
I've not included sources here but will if you ask.
Maybe another Rootschatter can add to or correct this

Regards
Reiver