Sheringham’s country? (4)

I believe the answer is:

erin

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

'country?' is the definition.
(I've seen this before)

'sheringham's' is the wordplay.
'ERIN' is hidden within the letters.
However, I am unsure how the hidden word is indicated.

Can you help me to learn more?

(Other definitions for erin that I've seen before include "Early and poetic name here" , "Land" , "Old Ireland" , "Another name for 11 ac" , "that faces Atlantic" .)

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