John and Alicia Nash have died in a car accident.
Here's the news story: Famed Princeton mathematician John Nash, wife killed in taxi crash
Here's the NY Times obituary: John F. Nash Jr., Mathematician Whose Life Story Inspired ‘A Beautiful Mind,’ Dies at 86
Here's the news story: Famed Princeton mathematician John Nash, wife killed in taxi crash
Here's the NY Times obituary: John F. Nash Jr., Mathematician Whose Life Story Inspired ‘A Beautiful Mind,’ Dies at 86