Screen actress in minor role many condemned (7,6)
I believe the answer is:
marilyn monroe
'screen actress' is the definition.
(film actress)
'minor role many condemned' is the wordplay.
'condemned' indicates anagramming the letters.
'minor'+'role'+'many'='minorrolemany'
'minorrolemany' anagrammed gives 'MARILYN MONROE'.
'in' acts as a link.
(Other definitions for marilyn monroe that I've seen before include "Norma Jean Baker" , "US actress - Norma in my role! (anag)" , "1956 Bus Stop star" .)