Which preposition to use with wem

in Occurrences 1%

Hazlitt, in "My First Acquaintance with Poets" (a paper that every student of Coleridge's life and poetry should read), describing him as he appeared on his visit to Hazlitt's father at Wem in 1798, says: "His complexion was at that time clear, and even bright.

Which preposition to use with  wem