Umbridge - Keeping Up Appearances/Bellatrix

[Maureen]

Going by your descrition, is this who you mean?

http://uk.imdb.com/title/tt0065317/

She's called Judy Cornwell, but I haven't seen her in anything to 
know if she's be good or not.  

As for Bellatrix, I think Anna Chancellor and Catherine Zeta Jones 
are too feminine for her, I get the impression she's got more a 
masculine beauty.  How about Daniela Nardini instead? 
http://uk.imdb.com/name/nm0621356/