|Ruth Warrick (1915 - 2005)|
|Citizen Kane (1941) [Emily Monroe Norton Kane]: Dies (off-screen), along with her son, in an accident. (I can't recall the details, but I remember that their deaths were mentioned during the account of Orson Welles' life.)
Deathmask (Unknown) (1984) [Beatrice VandenBerg]: Dies (off-screen), presumably of natural causes; we only hear about her death after the fact when Farley Granger receives the news in his office.
All My Children (2005; circa January/February) [Phoebe English Wallingford]: Dies (off-screen) of old age/natural causes. (Ruth did not actually appear in the episode establishing her character's death, as it was filmed after her own real-life death.) (Thanks to Aaron)