South-based reality show introducing northern resident (6)

I believe the answer is:

townie

I'm a little stuck... Click here to teach me more about this clue!

'resident' is the definition.
(I know that townie is a type of townsman)

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for townie that I've seen before include "Inhabitant of an urban area" , "Urban type" , "No countryman" , "citizen" , "city type" .)

I've seen this clue in The Telegraph.

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