Quiet anger in Devon maybe (5)
I believe the answer is:
shire
'devon maybe' is the definition.
(Devon was historically called Devonshire)
'quiet anger' is the wordplay.
'quiet' becomes 'sh' ('sh' is used to tell someone to be quiet).
'anger' becomes 'ire' (ire is intense rage).
'sh'+'ire'='SHIRE'
'in' is the link.
(Other definitions for shire that I've seen before include "Rural county" , "The -----: Tolkien's hobbit-land" , "Heavy horse" , "County (esp. in England)" , "Powerful draught horse" .)