James Young Simpson - scientist - died on 1934-05-20.
Neil Campbell - scientist - died on 2004-10-21.
Albert Schatz - scientist - died on 2005-01-17.
James Weddell died on the 9th September, 1834, at the age of 47.
Julie Payette did not die. She is 50 years old, and she is a Canadian engineer and astronaut. In 2014, she was appointed a Director of the National Bank of Canada.
The scientist you're thinking of is Thomas Edison. It's not true that he never slept. He would occasionally stay up for days at a time, so his wife installed a cot in his workshop. All humans must sleep or we will die.
James B. Simpson died in 2002.
James Simpson - explorer - died in 2002.
James Simpson - advocate - died in 1853.
James Simpson - priest - died in 1948.
James E Simpson Jr died in 1999.
James Simpson - politician - died on 1938-09-24.
Edwin James - scientist - died on 1861-10-28.
Ernest Aldrich Simpson died on 1958-11-30.
Walter James Young died in 1940.
James Scott Young died in 1914.
James Alexander Young died in 1956.
Thomas James Young died on 1869-03-20.