Seductive dancer Oscar married in Cheshire town (6)
I believe the answer is:
salome
'seductive dancer' is the definition.
(dancer in the Bible)
'oscar married in cheshire town' is the wordplay.
'oscar' becomes 'O' (phonetic alphabet: alpha, bravo, charlie etc.).
'married' becomes 'm' (abbreviation, e.g. in genealogy).
'in' indicates putting letters inside.
'cheshire town' becomes 'sale' (I am not sure about this - if you are sure you should believe this answer much more).
'o'+'m'='om'
'om' put within 'sale' is 'SALOME'.
Can you help me to learn more?
(Other definitions for salome that I've seen before include "Herod's niece in Wilde play" , "Seven veils dance girl" , "Opera by Richard Strauss" , "She demanded head of John the Baptist" , "She danced with seven veils for the Baptist's head" .)