Everyone originally occupying a town in Clackmannanshire (5)

I believe the answer is:

alloa

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'in clackmannanshire' is the definition.
(I know that Alloa capital of Clackmannanshire)

'everyone originally occupying a' is the wordplay.
'everyone' becomes 'all' (all people).
'originally' indicates taking the first letters.
The initial letter of 'occupying' is 'o'.
'all'+'o'+'a'='ALLOA'

'town' is the link.
This may not be correct. It may be part of another bit of the clue.

Can you help me to learn more?

(Other definitions for alloa that I've seen before include "possible cup opponent" , "Town on Firth of Forth" , "Central Scottish town" , "Clackmannanshire town" , "place in Scotland" .)

I've seen this clue in The Times.

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