Leonardo da Vinci
When people talk about Renaissance men, they usually bring up Da Vinci as their example. He was an artist, scientist, inventor and many more. His research and discoveries in all the fields he took part in changed those fields forever. Artists reference Da Vinci.
Scientists reference Da Vinci. Musicians even reference Da Vinci. While a lot of his work never was completed, many people would use his ideas and sketches to create things that we still use today.