Otto Lilienthal was a German pioneer of aviation who became known as the flying man. He was the first person to make well-documented, repeated, successful gliding flights. Newspapers and magazines published photographs of Lilienthal gliding, favorably influencing public and scientific opinion about the possibility of flying machines becoming practical. On August 9, 1896, his glider stalled and he was unable to regain control. Falling from about 15 m, he broke his neck and died the next day, 10 August, 1896.

https://en.wikipedia.org/wiki/Otto_Lilienthal