That's really helpful, and thank you so much for looking!
The names of Joseph and Hannah's children have some resemblance to the names in my family in Great Glen, but probably not so much as to be conclusive. I have Johns, Williams, Annes and Sarahs. But not many Josephs or Marthas. So.....
I am still somewhat inclined to think that my Easter, who later on had a longstanding lodger living with her and her husband Robert Grant in Great Glen, was a Leicestershire person. The lodger was called John Blount, born a few years later (and I assume he must have been Esther's brother, or possibly a cousin). Both Easter and John record Great Glen as their place of birth in the 1851 census records. Though as both of them were recorded as 'paupers' there is, I suppose, a faint possibility that they simply said 'Great Glen' to avoid being sent on somewhere else. Easter's husband had died by 1851, and things look to have been pretty bad for them.
I have been looking at the Blount family in Great Glen and Burton Overy, an adjacent village, and have found a lot of them going back to the sixteenth century, but there is no mention of an Esther or Easter anywhere in those records. I used a file I bought online from Parish Records. So perhaps Easter didn't come from those parishes. I have found the name of Easter amongst the many Blounts who come from Wymeswold, in the north of Leicestershire, so I suppose that's a possibility too, though I have not bought the file for that. There seem to be hundreds of Blounts there! I am contemplating looking through the parish records of other local Leicestershire villages such as Stretton, Kibworth, Fleckney, Carlton Curlieu, Saddington and Newton Harcourt, in case somehow it has been missed, though again I have not bought the files for those. Another relatively unusual christian name in the family later was Judith, and I found one of those in Waltham-on-the Wolds, again in North East Leicestershire, but back in the early 17th century! If anyone has ideas on those, I'd be most interested.
Again, I am interested in your commentary on the state of the parish records in Great Glen. There was also, of course, a nonconformist tradition, though Easter had her children christened in the CofE.
Anyhow, that's sufficient to have bored you, I am absolutely sure!