Question: Who was the only Apostle to die a natural death?
Answer: John
Read more
http://www.christianity.com/church/church-history/timeline/1-300/whatever-happened-to-the-twelve-apostles-11629558.html
and
https://churchpop.com/2016/09/01/the-miraculous-story-of-how-the-last-apostle-died/