Tudor queen's favourite city? (9)

I believe the answer is:

leicester

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

'city?' is the definition.
(Leicester is an example)

'tudor queen's favourite' is the wordplay.
I cannot quite see how this works, but
'queen' could be 'er' (abbreviation for Elizabeth Regina) and 'er' is present in the answer.
This may be the basis of clue (or it may be nonsense).

Can you help me to learn more?

(Other definitions for leicester that I've seen before include "East Midlands city, home of the National Space Centre" , "City, Robert Dudley" , "London film premiere location" , "City; orange cheese" , "Elizabeth the first's favourite" .)

I've seen this clue in The Telegraph and The Times.

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