Short answers, pulled from the story.
John Snow was an English physician and a leader in the development of anaesthesia and medical hygiene. He lived from the 15th of March 1813 to the 16th of June 1858 and is considered one of the founders of modern epidemiology and early germ theory.
John Snow traced the 1854 Soho cholera outbreak to the public water pump on Broad Street, now Broadwick Street. With the help of Henry Whitehead, he interviewed local residents and found nearly all the deaths clustered near that pump, which led the council to remove the pump handle.
John Snow was one of the first physicians to study and calculate dosages of ether and chloroform as surgical anaesthetics. He designed an apparatus to administer ether and a mask to administer chloroform, and within two years of ether's 1847 introduction he was the most accomplished anaesthetist in Britain.
Yes. On the 7th of April 1853, Queen Victoria asked John Snow to administer chloroform during the delivery of her eighth child, Leopold. He repeated the procedure for the birth of her daughter Beatrice in 1857, which helped lead to wider acceptance of obstetrical anaesthesia.
John Snow suffered a stroke while working in his London office on the 10th of June 1858, at the age of 45. He never recovered and died six days later, on the 16th of June 1858, and was buried in Brompton Cemetery.
Government officials rejected John Snow's theory because accepting it meant accepting the fecal-oral route of disease transmission, which was too unpleasant for most of the public to contemplate. Not until 1866 did William Farr, one of Snow's chief opponents, accept the validity of his diagnosis during an outbreak at Bromley by Bow.