Without going over old ground I can tell you that my 3 x great grandfather, William Bird of Newnham (week #43), built 8 Elizabeth Place and his son, William Henry Bird, lived there for most of his life ...... including when this son was born in 1853.
I also know as a fact that William married Selina Curtis because of an entry in the probate records when he died in 1870. I have confirmed that his son was in the Grenadier Guards and have documented the story of Thomas Ross in Hastings (week #29). There can be no doubt, despite there being a large number of William Birds, and William Henry Birds in particular, that this is the right family and the right certificate.'
All good so far ? When they carried out the census in 1861 I eventually found William and Selina with their child Henry living at 8 Elizabeth Place. This was despite an horrendous mistranscription of their surname and Henry having acquired a middle name, "G" ?
I know that young Henry married in June 1874 and that on the marriage certificate his middle name is revealed as being George. His mother, who had remarried after the death of William, was one of the witnesses.
All I can surmise is that Caroline is really Selina but for some unknown reason she decided it might be fun to have a laugh with the person who came to take the census and put on a French accent and pretended to be Caroline. Sounds ridiculous but sometimes fact is stranger than fiction. We will probably never know the truth but it's fun to guess !!