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John Langdon Down

1828 - 1896

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John Langdon Haydon Down (18 November 1828 – 7 October 1896) was a British physician best known for his description of the genetic condition now known as Down syndrome, which he originally classified in 1862. Read more on Wikipedia

Since 2007, the English Wikipedia page of John Langdon Down has received more than 324,938 page views. His biography is available in 31 different languages on Wikipedia (up from 30 in 2019). John Langdon Down is the 150th most popular physician (down from 101st in 2019), the 781st most popular biography from United Kingdom (down from 611th in 2019) and the 12th most popular British Physician.

John Langdon Down was a doctor who first described what is now known as Down syndrome in 1866.

Memorability Metrics

  • 320k

    Page Views (PV)

  • 61.17

    Historical Popularity Index (HPI)

  • 31

    Languages Editions (L)

  • 6.69

    Effective Languages (L*)

  • 2.69

    Coefficient of Variation (CV)

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Among physicians, John Langdon Down ranks 150 out of 502Before him are Heo Jun, Louis Ignarro, Baruj Benacerraf, André Frédéric Cournand, Baruch Samuel Blumberg, and George H. Hitchings. After him are Alan Hodgkin, Ludwig Guttmann, E. Donnall Thomas, George Emil Palade, Fritz Klein, and Magnus Hirschfeld.

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Among people born in 1828, John Langdon Down ranks 15Before him are Dante Gabriel Rossetti, Charbel Makhlouf, Nikolay Chernyshevsky, Louise of the Netherlands, Albert Marth, and Albert of Saxony. After him are Ferdinand Cohn, Joseph Swan, Prince Friedrich Karl of Prussia, Paul Gachet, Alexander Butlerov, and Prince Adalbert of Bavaria. Among people deceased in 1896, John Langdon Down ranks 20Before him are Naser al-Din Shah Qajar, Edmond de Goncourt, José Rizal, Ambroise Thomas, Louis-Jules Trochu, and Prince Louis, Duke of Nemours. After him are Richard Avenarius, Frederic Leighton, Prince Henry of Battenberg, Emil du Bois-Reymond, Ichiyō Higuchi, and Ernst Engel.

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In United Kingdom

Among people born in United Kingdom, John Langdon Down ranks 781 out of 7,765Before him are Henry Fielding (1707), John of Salisbury (1110), Frederick Fleet (1887), Richard Laurence Millington Synge (1914), James Macpherson (1736), and Thomas Tallis (1502). After him are Imelda Staunton (1956), John Gielgud (1904), Guy Ritchie (1968), John William Polidori (1795), Saint Malachy (1094), and Prince George, Duke of Kent (1902).

Among PHYSICIANS In United Kingdom

Among physicians born in United Kingdom, John Langdon Down ranks 12Before him are Elizabeth Blackwell (1821), Edgar Adrian (1889), John Snow (1813), Niels Kaj Jerne (1911), Frederick Griffith (1879), and Mungo Park (1771). After him are Alan Hodgkin (1914), Thomas Willis (1621), Hans Sloane (1660), James Black (1924), James Lind (1716), and Edward Bach (1886).