John Langdon Down died in 1896.
John Langdon Down was the first person to discover down syndrome.
John Langdon Sibley died in 1885.
John Langdon Parsons died in 1903.
John Langdon-Davies died in 1971.
His name is John Langdon Down. The disorder was named after him.
John Langdon Bonython died on 1939-10-22.
John Langdon - politician - died on 1819-09-18.
== == Dr. John Langdon-Down was a pioneer in training the mentally handicapped in Middlesex, England, toward the end of the 1860s. For more information, see the Related Link.
because he wanted to
John Langdon Down & Jerome Lejeune
It was named after the man who studied it. John Langdon Down.
He died at the age of 78 from old age.