The religious author Allan Kardec died at the age of 64. Here is all you want to know, and more!
Biography - A Short Wiki
French educator and author remembered for his systematization of the practice and faith of Spiritism. His publications on the topic include The Book on Mediums, The Spirits’ Book, and The Gospel According to Spiritism.
After marrying Amelie Gabrielle Boudet in 1832, he converted from Catholicism to Spiritism.