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It is named after John Langdon Down, the British doctor who fully described the syndrome in 1866. Some aspects of the condition were described earlier by Jean-Ãtienne Dominique Esquirol in 1838 and Ãdouard SÃ©guin in 1844. In 1957, the genetic cause of Down syndrome, an extra copy of chromosome 21, was discovered.
John Logie Baird (August 13, 1888 - June 14, 1946) was a Scottish engineer and inventor of the world's first working television system in Hastings, England in 1923. An official blue plaque marks the house where this took place. Hastings Museum hold various pieces of related correspondence.