Megan Marshack, an aide to Nelson Rockefeller who was with the former vice president when he died in 1979, has died. Marshack died on Oct. 2 of liver and kidney failure in Sacramento, California. She had a long and varied career in journalism. But she suddenly gained national attention after Rockefeller collapsed and died of a heart attack on the night of Jan. 26, 1979. Shifting explanations regarding the details of that night fanned conjecture about the death of the 70-year-old member of the wealthy Rockefeller family and the nature of his relationship with his 25-year-old researcher. Marshack kept quiet about what happened and became a “mystery woman” hounded by reporters.