Why wasn't she more famous?
She was in some famous films in the 1960's, 1970's, and 1980's- The War Is Over, King of Hearts, The Thief of Paris, Anne of the Thousand Days, The Trojan Women, Earthquake, Obsession, Murder by Decree, The Moderns, and Dead Ringers.
Then flops. Why?
https://en.wikipedia.org/wiki/Genevi%C3%A8ve_Bujold