She was 96 when she died and she died of lung cancer.
Carolyne Morrison died in 1997.
Carolyn Keene is a pseudonym that has been used by many authors, both male and female. It is not one author. The first person to use it, Mildred Wirt Benson, died in 2002.
Carolyne zu Sayn-Wittgenstein died in 1887.
Carolyne Melkus died on June 9, 1964, in Los Angeles, California, USA.
Carolyn Keene is the author of the popular Nancy Drew book series. It is actually a pen name for a large group of people who write the books.
Edmund Keene died in 1781.
Henry Keene died in 1776.
Doug Keene died in 1986.
Constance Keene died in 2005.
Alfred Keene died in 1955.
Keene Fitzpatrick died in 1944.