Is he of Caledonian extraction? (3)

I believe the answer is:

ian

'is he' is the definition.

'of caledonian extraction?' is the wordplay.
'of' indicates the answer is hidden within the clue.
'IAN' is hidden within 'caledonian extraction'.

(Other definitions for ian that I've seen before include "Albert Beale's first name in EastEnders" , "- Fleming (James Bond)" , "... Fleming, author of the Bond books" , "Scottish John" , "The familar Dr Paisley" .)

I've seen this clue in the Evening Standard.

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