It's really not possible to say, since humans have been aware of it for so long, probably thousands of years.
Many of the first discovered elements were named by their discoverer or the location where they were discovered, such as hydrogen, named by Antoine Lavoisier, and uranium, named after the planet Uranus.
Henry Hudson discovered and named the the Hudson River in 1610.
It is however discovered by the person that is named to it. That is the law, for example you are the one that discovered it. It is named to you.
Vitamin A was the first vitamin to be discovered and named in 1913 by Elmer McCollum and Marguerite Davis.
When discovered it was called Easter Island
it was discovered by a guy named Alexander Parkes in 1862
Palladium is named after the asteroid Pallas, which was discovered in 1802. The element palladium was also discovered around the same time, in 1803, and was named in honor of the recently discovered asteroid.
An eponymous condition is named after someone.
Curium was named after the Curies.
The oven was discovered by O. Ven, for whom it is named, who also discovered the Ven diagram.
Well, in 1812, a man named Mr Calory discovered that all the fatties in his village were eating Mc Donalds, and the skinny peasants were eating leaves, he related this study to correlating pieces of research surrounding obese sheep, and Walah! That's why we have high fat foods, and low fat foods!
Euclid discovered the circle and he named his geometry "Euclidean geometry "