A son has baby's bed from Berkshire town (5)
I believe the answer is:
ascot
'berkshire town' is the definition.
(town in Berkshire)
'a son has baby's bed' is the wordplay.
'son' becomes 's' (genealogical abbreviation for son).
'has' is a charade indicator (letters next to each other).
'baby's bed' becomes 'cot' (cot is a kind of baby's bed).
'a'+'s'+'cot'='ASCOT'
'from' acts as a link.
(Other definitions for ascot that I've seen before include "somewhere in Berks" , "Place for meeting" , "Tie round the neck" , "Tosca (anag) - racecourse" , "Royal racing venue" .)