Thomas Alva Edison (February 11, 1847 – October 18, 1931) was an American inventor and entrepreneur, who invented many things. Thomas Edison developed one of the first practical light bulbs, but contrary to popular belief did not invent the light bulb. Edison's 1093 patents were the most granted to any inventor in his time. He started the General Electric Company to make some of the things he invented.He died due to a disease called 'Diabetes mellitus'.