John Langdon (June 26, 1741 - September 18, 1819) was a politician from Portsmouth, New Hampshire and one of the first two United States senators from that state
John Langdon Down & Jerome Lejeune
what philosophies influenced john langdon?
John Langdon Down died in 1896.
John Langdon Sibley died in 1885.
John Langdon Sibley was born in 1804.
John Langdon-Davies was born in 1897.
John Langdon-Davies died in 1971.
John Langdon Parsons was born in 1837.
John Langdon Parsons died in 1903.
John Langdon and a dog
John Langdon Down was the first person to discover down syndrome.
Governor John Langdon House was created in 1784.