Thanks for the welcome.
You're right. He did refer to the town, Stoke-upon-Trent, as 'Knype'.
The conurbation [it is, officially, a city comprising six towns... and Knypersley - from which Bennett took 'Knype' - is not one of them] is Stoke-on-Trent... usually shortened to Stoke.
The difference between town name and city name was drummed into us at school.