what was the reason for his death?
Heart failure.
Death
White died of heart failure on 17 January 1964 aboard ship in Piraeus, Athens, Greece, en route to Alderney from a lecture tour in the United States. 
when did the arthurian legends reach their height of popularity With the outbreak of the Second World War. who was he? He was a legendary British leader who, according to medieval histories and romances, led the defence of Britain against Saxon invaders in the late 5th and early 6th centuries. who was he married to? UNANSWERABLE any novel in which his romance tradition is continuing in 20th century? "The Once and Future King", "Arthur Rex", and "The Mists of Avalon". who was the author of the first one mentioned above? T.H.White. when was it first published? 1958. has a film ever been made on this? Yes, "Camelot". any other novel written by the above author? "The Sword in the Stone". where was he born? In Bombay, British India. what college did he study from? Queens' College, Cambridge. when was this college founded? 1448. and by whom? By Margaret of Anjou. who was she? The Queen of England and nominally the Queen of France by marriage. with whom she was married to? King Henry VI. when did the above mentioned author die? 17 January 1964.
Heart failure Heart failure. Heart failure
T. H. White T. H. White T. H. White
Death Death Death
White died of heart failure on 17 January 1964 aboard ship in Piraeus, Athens, Greece, en route to Alderney White died of heart failure on 17 January 1964 aboard ship in Piraeus, Athens, Greece, en route to Alderney from a lecture tour in the United States. He is buried in First Cemetery of Athens. In 1977 "The Book of Merlyn", a conclusion to "The Once and Future King", was published posthumously. His papers are held by the University of Texas at Austin. White died of heart failure on 17 January 1964 aboard ship in Piraeus, Athens, Greece, en route to Alderney from a lecture tour in the United States.
wiki:19592134
T. H. White [SEP] Death
White died of heart failure on 17 January 1964 aboard ship in Piraeus, Athens, Greece, en route to Alderney from a lecture tour in the United States. He is buried in First Cemetery of Athens. In 1977 "The Book of Merlyn", a conclusion to "The Once and Future King", was published posthumously. His papers are held by the University of Texas at Austin.