People around Tiber (5)

I believe the answer is:

tribe

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'people around tiber' is the definition.
'tribe' can be an answer for 'people' (I've seen this before). I am not certain of the 'around tiber' bit.

'around tiber' is the wordplay.
'around' is an anagram indicator.
'tiber' anagrammed gives 'TRIBE'.

Can you help me to learn more?

(Other definitions for tribe that I've seen before include "Racial group living under chief" , "Ethnic grouping" , "Extended family group" , "Group of people with a common culture" , "Breed" .)

I've seen this clue in The Mirror.

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