what philosophies influenced john langdon?
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John Langdon Down died in 1896.
John Langdon Sibley died in 1885.
John Langdon Sibley was born in 1804.
John Langdon Parsons was born in 1837.
John Langdon Parsons died in 1903.
John Langdon-Davies was born in 1897.
John Langdon-Davies died in 1971.
John Langdon Bonython died on 1939-10-22.
John Langdon Bonython was born on 1848-10-15.
Governor John Langdon House was created in 1784.
John Langdon - politician - was born on 1741-06-26.