It's actually a Prayer Book and Bible bound as one volume, and dates from 1773 with all the family names and dates inscribed on an initial leaf (the one in my illustrative picture would be much later). It's potentially a nice artefact, but isn't in good shape: the covers are detached, the leather almost worn away, and it smells strongly enough of mould that you don't want to breathe in too deeply in its company. Despite its date, the problem is that there are simply too many of these Bibles around for anyone other than the family involved to be interested in it, unless there was something unusual about the family or the circumstances in which it was compiled. Every family that could afford a book like this would have had one, and the question of what to do with them regularly arises, at museums as much as at churches (at my last workplace we had a couple).
The old Jewish custom is that worn-out texts and manuscripts that might contain the name of God are held in a storeroom in the synagogue, the Genizah, and then formally buried perhaps every seven years. Maybe churches should offer a similar service! If nobody in her family was interested in keeping the book, I told Anna, the most respectful thing would be to bury it, to return it to earth. She seemed to like that. I remember doing the same some years ago with copies of the Book of Mormon Mad Trevor gave me, but respect wasn't the issue there.