Hi Heywood,
Thank you for your very quick reply.
I live overseas so I personally don't have the census information, but have collected the information from previous posts, from myself and other people.
Thank you for the details of the other children of Christina and Henry. You have confirmed two points: One is that it would appear that the other sons did not marry either - and I find that very unusual.

The second being the strange name changes of Christina.
I take your point that they did stay in the same place for a very long time, giving the indication that there was nothing to "hide" but that does not explain the eccentricity, neither does it explain why the children did not marry - even when it would appear that William fathered seven children with the same woman - Harriet Pardoe.
My reason for putting together this posting is that it is extremely unusual for six sons, all of marriageable ages NOT to have married, and I am searching for the reason - although my particular interest is in William.
By the way - how do I access the 1881 census document?
As to my family - my direct ancestor in this story is Harriet Pardoe. I am a grandson of her daughter Louisa, but have been searching for Louisa's father for over two years, without success until recently, when we managed to put together some very strong circumstantial evidence that pointed to William Griffin.