Where is the churchyard depicted in Thomas Gray's 'Elegy Written in a Country Churchyard'?

Question

have you seen it?

Answer 1

The churchyard is in buckingshamshire and the poem was set in the 1750s

I enjoyed visitng it when I was on holiday there

Answer 2

Stoke Poges Buckinghamshire, written after the death of his uncle. Haven't seen it though.

Answer 3

In the country.