An easy mistake, Michelle, since these days comets do get named after their discoverers. And if there's more than one discoverer the name can get hard to say, especially if it's two Russians like the comet that
Rosetta is orbiting: Churyumov–Gerasimenko. (I have a colleague who can get that out without tying his tongue in knots, but I still have trouble.)
And of course Halley did something much cleverer than discover a comet when he realized that his comet is periodic and predicted its return. But he had to be covered in posthumous glory because he was long gone when the comet returned. Very few people ever see it twice.