« Reply #1 on: Saturday 31 May 25 08:38 BST (UK) »
Maybe just a clerical error on the Death Duty register. Most of the ones I have seen have the name of the person paying the tax (usually executor if there's a will or next of kin). They also have a column for W or A (Will or Admon), and are arranged chronologically with a page per initial letter of surname.
It looks as if the DD register here is an abridged transcript just for the one diocese. As John Rushley was buried in December 1807, maybe he was intended to be in the 1808 section.
Berks / Oxon: Eltham, Annetts, Wiltshire (surname not county), Hawkins, Pembroke, Partridge
Dorset / Hants: Derham, Stride, Purkiss, Sibley
Yorkshire: Pottage, Carr, Blackburn, Depledge
Sussex: Goodyer, Christopher, Trevatt
Lanark: Scott (soldier went to Jersey CI)
Jersey: Fowler, Huelin, Scott