That was an especially good year for supporting actress nominations! IMHO in no other year has the Oscars seen SO MANY phenomenal performances by actresses in a supporting role. Frankly, I think that Lilia Skala's performance in 'Lillies of the Field' was hands down THE BEST of any that year, even better than the Best Actress nominees!
The TJ ladies probably cancelled each other out so it was always going to be Skala or Rutherford and seeing how Dame Margaret is such a lovely funny presence she gets my vote,the best performanc in TJ was Joan Greenwood and she was left out.