Elizabeth Ann John(s)

[Tremough]

One of my greatgrandmothers was called Elizabeth Ann John(s) and was born in Neath in 1851.  She married Walter Hill born c1849 Kerry, Ireland, in the parish church, Neath on the 26 September 1870.

I would love to find out more about her family in Wales.  Her father was called David John(s) and was a collier at the time of Elizabeth's marriage.

Elizabeth and Walter moved to Ponsanooth, Cornwall about 1880.  Their children who were born in Wales are:
Mary Ann Hill b. 1871 Neath
Elizabeth Hill b. 1874 Neath
Hannah Marie Hill b. 1875 Neath
Louisa Jane Hill b.Averavon
Emily Margaret Hill b 1879 Neath

I wonder if anyone can find Elizabeth and Walter in the 1871 census, and I would love information on her father, David, and her brothers and sisters.

Many thanks in anticipation.

Patricia