The family were generally in or around Yaxley so the St Neots deaths will need to be re-checked.
William Snr and Mary Dobbs had three children,Elizabeth 1791,Daniel 1795 and William Jnr 1797.I had taken '41,'51 and '61 census as William Jnr living in Yaxley even though ages seemed all wrong.In 1861 his occupation is Military Pensioner then crossed out and ag lab added.POB shown as Washingley.
Genuki shows no chapel there and indicates Caldecote and Folksworth as parishes of choice though other baptisms (different people)are found at Lutton and Elton..
The only information for William Snr is the marriage in 1792.
I find it a bit odd that the death of a 90 year old was not newsworthy,different times,i guess.
Eric