Inhabitants of a Gaelic land (4)

I believe the answer is:

clan

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'inhabitants of a gaelic land' is the definition.
The definition and answer can be both groups as well as being singular nouns.
Perhaps they are linked in a way I don't understand?

'of a gaelic land' is the wordplay.
'of' indicates a hidden word.
'CLAN' is hidden within 'gaelic land'.

Can you help me to learn more?

(Other definitions for clan that I've seen before include "Scottish family grouping" , "Tribal family" , "Scots family grouping" , "Extended family as in Scotland" , "Kinship group" .)

I've seen this clue in The Globe and Mail.

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