Breage Baptism - WILLIAMS

[Mamspice]

So possibly this family at Kenneggy Downs, Breage -  William (40, tin miner) and Elizabeth (40) WILLIAMS with son William and family in 1841
HO107/136/2 pg22
https://www.familysearch.org/ark:/61903/1:1:MQY5-RCG

Of note, next door is an Elizabeth WILLIAMS (70) and family.

If you think this family from the 1841 census is correct.... then I think these are the parents .....
Marriage 19 July 1823 BREAGE
William WILLIAMS Bachelor of Germoe
Elizabeth SCHOLAR spinster of Breage
Witnesses – John Williams and George Hebbard

Their son John baptised 26 Aug 1827 (was baptised in Germoe, the father's parish) and is seen on that 1841 census record.
When the youngest Mary Jane was baptised in Breage (28 Mar 1837 ) they were living at Kennegy Downs.

I am assuming John would be his brother? 

[Mamspice]

It certainly is very tricky. Who are the witnesses on the 1864 marriage? They may offer a clue.

They are James Cock, who I assume is her brother, and someone Rowe, the writing is very small!