Uranus Was Discovered 236-Years Ago, By British Astronomer William Herschel.
First planet discovered by a KNOWN person. The other 6 (including Earth) had been known about since antiquity.
First planet discovered with the aid of a telescope.
As with the discovery of Pluto, I talked about the Uranus discovery in my 2011 full-color, paperback & e-book “Devanee’s Book of Dwarf Planets“ (which is definitely worth looking at (even if I say so myself)).