Honorable Mentions.

Along the period of the Industrial Revolution, many people that we now recognize as greats today in our society were just getting planted on their feet. The Wright brothers were two bicycle mechanics who flew their way into much success. Through much trial and error the Wright brothers put together the first ever aircraft, and after multiples were finally successful. If they hadn't created such an invention I'm sure it still would've eventually discovered by someone else, but the Wright brothers did.