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Franklin Buchanan died on 1874-05-11.
Franklin Buchanan was born on 1800-09-17.
Benjamin Franklin Buchanan died on 1932-02-21.
Benjamin Franklin Buchanan was born on 1857-10-04.
Unless it is published somewhere that a person is a Freemason, it is difficult to find out if he ever was a Freemason. I can't find that Admiral Franklin Buchanan was a Freemason.