Italian region may be twinned with cold English county (6)

I believe the answer is:

umbria

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'italian region' is the definition.
(Umbria is an example)

I cannot understand how the rest of the clue works.

(Other definitions for umbria that I've seen before include "in the Tiber region" , "Mountainous region in central Italy" , "part of Italy" , "Italian region" , "hilly area of Italy" .)

I've seen this clue in The Irish Times.

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