Thank you John for that. I did eventually get a reply from Biggleswade Library on this, and it seems no-one in the family knew how old she was. Her death cert, informed by her granddaughter says she was 81, her burial says 97, she was baptised 26 Dec 1798, and a birth date was given for 4 Dec 1798, these we found on familysearch her maiden name being Foster , common enough but she and her female siblings were also given the middle name "Yarley", the maiden name of her mother.
I had a reply yesterday on the burial of Jane's husband Thomas Jeeves who died in 1871, which took place in Dunton. Can you tell me if that would also have been a churchyard burial or was there a town/village cemetery at that date?
And one last query, do you know where or if burial plot references are recorded for the Bedfordshire cemeteries? I hail from West Yorkshire and our local cemetery has the plot number and from that we have found many other relatives buried who we may not of otherwise known a connection with.