It's really not possible to say, since humans have been aware of it for so long, probably thousands of years.
Henry Hudson discovered and named the the Hudson River in 1610.
Io was named by Simon Marius, though it was discovered by Galileo.
many of the first discovered elements were named by greek and roman philosophers
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.
a Scottish botanist, discovered the presence of nuclei within cells.
When discovered it was called Easter Island
it was discovered by a guy named Alexander Parkes in 1862
When a disease is named after the person who first discovered it, it is known as "eponymous."
Curium was named after the Curies.
The oven was discovered by O. Ven, for whom it is named, who also discovered the Ven diagram.
John Biscoe discovered and named the Biscoe Islands
Armalite was discovered by a fiilipino inventor named armando lite.