caption death_date death_place children birth_place nationality name birth_date known_for image article_title birth_name occupation
portrait of john langdon down 07 october 1896 teddington , england reginald down percival down torpoint , cornwall , england cornish john langdon down 18 november 1828 first to describe down syndrome jlhdown.jpg john langdon down
 john langdon haydon down medical doctor
john langdon down

john langdon haydon down , ds -lrb- 18 november 1828 -- 7 october 1896 -rrb- , was a cornish physician best known for his description of a relatively common genetic disorder that is now called down syndrome which he originally classified in 1862 .
