Tea break conundrum – Where am I?

Here are the clues:

1. The sill of my church door reads “Detried oc con hinoc”, in C8th, Welsh, the local language then.
2. Leo Amery, Politician, was buried here in 1955.
3. There is a pomegranate badge of Catherine of Aragon on my church screen, dated 1558.
4. Nearby is a cleave of much repute.
5. My C13th church is St. John the Baptist and has a double piscina.

DLE UVS OTN LSE HII GRH E

Post the answer below!

Quiz by Roger Thomas