While at the archives looking up family marriages last week I found a witness that appeared to be called Barzillea Lambert.
As it was a "latinized" entry, and convinced it couldn't really be that, I even copied it down in as close to the original handwriting as I could manage to try and work it out later.
Noting that the marriage was in 1880 I decided to see if what happened if I tried just the first name on the 1881 census and discovered about a hundred Barzilleas including some variants of that spelling. Having found him and his family, I tried my witness in Familysearch and then discovered he had married a sister of the relative whose marriage I was looking up, so he is indeed related to me.
Has anyone else got a Barzillea/Barzillia/Barzillai and does anyone know where the name comes from?