John Langdon Down

British physician and first person to describe Down syndrome (1828-1896)

John Langdon Haydon Down (18 November 1828 – 7 October 1896) was a British physician. He was best known for his description of the genetic condition now known as Down syndrome, which he originally discovered in 1862.[1]

John Langdon Down
Portrait of John Langdon Down (c 1870) by Sydney Hodges.jpg
Portrait of Down
John Langdon Haydon Down

(1828-11-18)18 November 1828
Died7 October 1896(1896-10-07) (aged 67)
OccupationMedical doctor
Known forFirst to describe Down syndrome
Children4 Everleigh, Lilian, Reginald and Percival


  1. "Munks Roll Details for John Langdon Haydon Langdon-Down".

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