Barnaby periodically comes to Berkshire village (4)
I believe the answer is:
bray
'village' is the definition.
(I know that Bray is a village)
'barnaby periodically' is the wordplay.
'periodically' indicates alternate letters (letters must be selected 'every so often').
The alternating letters of 'barnaby' are 'BRAY'.
'comes to berkshire' acts as a link.
I am not very happy about this link. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for bray that I've seen before include "Animal's call" , "Donkey call" , "Harsh noise" , "time-serving cleric's place" , "Donkey's sound" .)