Actress Mary Tamm, who played the original Romana in the series, has of cancer at the age of 62.
Doctor Who Star Mary Tamm Dies Age 62
Mary Tamm Dead; Tom Baker Pays Tribute
I have always considered Mary Tamm to be the bona fide Romana, though I also enjoyed Lalla Ward's run as the character, but Mary Tamm epitomised the calm, cool, rational Time Lady to a "T". My favourite bits with Mary Tamm's Romana were here introduction at the start of the Key to Time sequence in "The Ribos Operation", "The Stones of Blood:", and The Androids of Tara", and some of her stuff in "The Armageddon Factor".
One of my favourite bits with Mary Tamm's Romana is this one:
Rest In Peace, Mary Tamm. Your joy, wit, and love of life will be missed.