These two did something (independently) that someone else got the whole credit for. These people have gone down history remaining relatively obscure. Who are they, what did they do, and who got the credit?

Cracked by everyone!

udupendra, shenoyvarun86, Mitesh, Chinmaya U.Holla, sidsen, krudebox, Ps, shrik, Dibyo, Rogi, Logik, Raghuvansh, dheeraj, Jean Valjean and Gurupad