Hi Tristan and welcome to Rootschat.
I was looking for a way to resurrect this thread and you have done that for me, and with the graves of William and Mary Ann you have probably also answered my original question which was to discover William’s date of death. Mary Ann’s birth date would be a bonus.
William was baptised in Selston on 13 Aug 1809. Don’t worry too much about the 1841 census dates as for that census people were able to round their ages to the nearest 5 years, so instead of appearing as 32 he appears as 30. The 1851 census gives his age more accurately as 42.
From the 1851 census, the elder Henry, now aged 71 and the owner of 44 acres of land in Underwood, was born in Tibshelf, Derbyshire so you need to go to the church records there (Library or Derby Records Office) to push back further. I do have some unconfirmed info on this and possibly further back from there into the Selston parish again.
My understanding is that Martha is buried in Church (Rock) Cemetery - Mansfield Road, Nottingham, together with her son John and his wife Sarah Jane, and their son Ralph and daughter Evelyn (Aunt Evie). I have photos of the two headstones for this common gravesite.
Would be very interested in making contact with you. Rootschat does not permit personal email addresses in postings so we need to use the Rootschat Personal Message system to exchange these, but you have to have at least 3 postings to activate it. Easily done by responding on this thread a couple of times (or three to be certain).
Regards
Terry