St Chad's Church in Shrewsbury is traditionally understood to be founded in Saxon times, and King Offa is believed to have founded the church, though it is possible it has an earlier foundation even than that.
It is possible it was operating on its initial site from buildings that were part of a royal palace established in 500s CE, Kingdom of Powys who had their capital at Shrewsbury, when it was known as Pengwern.
For a period of nearly 1000 years the church was at the original College Hill site, only moving to its current building and site in 1792.
Wikipedia https://en.wikipedia.org/wiki/St_Chad's_Church,_Shrewsbury
Address 2 Saint Chad's Terrace, Shrewsbury SY1 1JL, United Kingdom
Coordinates 52°42'26.238" N -2°45'32.26" E