The Bremhill marriage register shows Timothy Castle, blacksmith, of Berwick
Bassett, and Jane Wakefield of Bremhill being married on 19 Sept. 1756.
Witnesses to the wedding were Katherine Hughes and Joseph Wakefield.

Recorded in the Mildenhall burial register is:-

Timothy Caswell or Castell, 55 yrs a widower came to lodge in the Parish of
Mildenhall on 20 Oct., died 21st Oct, buried 24 Oct 1809.

I have searched the database to connect the date, but nothing exact popped up.
As people guessed the age of the dead, especially if they were strangers, then
I located the most likely candidate for this record. Of course, it could belong
to someone else.