I wonder if this is Ann's death?
Ann Fox
Dec q 1874
age 74
Chelsea
1a 231
In 1861 There is an Ann Fox In Essex ..living as a widow.
As you say, Ruskie, we have no idea if this is her given name or if she was in actual fact married/widowed prior to meeting NB.
deb
Um, it could be her death - age is right but not sure about area. (Of course she could have moved.)

I'm hoping Steven may know if there is any mention of Ann's marital status later in the diary, and
maybe he will let us know so we don't go off on a wild goose chase.

Have you looked for the 1861 Essex Ann Fox in any earlier censuses to eliminate her?

Yes Ann seemed to hang around Steven St, but she says she was born Queen St. There are LOADS of them all over Greater London. I'm going to have anohter look at her in the 1841 and 1851 ...