NHER 2211 (Monument record) - Possible late medieval water pipe

Around 1725 twenty-six earthenware drain pipes and alleged Roman bricks, found near medieval seabank in a garden (S1).
Interpreted as an aqueduct. Almost certainly not Roman (late 15th century (S2) calls Walpole St. Peter) Haverfield says 'needs confirmation very much'.

For reference Parish registers; (S3), (S4), (S5), (S6), (S7), (checked) (S9).
R. R. Clarke (NCM).

The 'Excursions' states that Sir A. Fountain called them Roman, and that Mr Cory (sic; not Coney as R. R. Clarke NCM suggested) sent them to Lord Coleraine and Dr Stukeley.
They were found at 3ft (0.9m) deep; pipes 20 inches (50cm) long, three and three quarter inch (9.5cm) bore, half and inch (1.75cm) thick, tapering into each other - 26 found whole. (S9) however does have 'found on land of Mr Edwin Coney' not Cory as in Excursions. Which is correct?

Ordnance Survey card has transcript of letter in Stukeley; 'I have a tenant who lives under the Bank and upon digging in his garden about 3ft (0.9m) under ground found many Roman bricks and an aqueduct (sic) made with earthenware pipes, we took up about twenty-six, most whole, though not without difficulty, they being almost (sic) as tender as the earth itself. These pipes were made of palish red earth, which grew hard again upon being exposed to the air.
The length of them was twenty inches, the bore three and three quarter inches, the thicknesses of their sides half an inch. One of the ends much smaller than the other so as to be inserted into the wider end of the pipe it followed'. Another reference is also given, (S10).
E. Rose (NAU), 17 January 1985.