Theorems' names that don't credit the right people The point of this question is to compile a list of theorems that don't give credit to right people in the sense that the name(s) of the mathematician(s) who first proved the theorem doesn't (do not) appear in the theorem name. 
For instance the Cantor Schröder Bernstein theorem was first proved by Dedekind.
I'd also like to include situations in which someone conjectured something, didn't prove it, then someone else conjectured the same thing later, also without proving it, and was credited with having first conjectured it.
Similar unfair things which I didn't remember to include might also be considered.
Some kind of reference is appreciated.

When I first heard that some people are calling the standard trick from calculus books the Feynman's trick my first impression was WTF?! Are you kidding me?!
Then I saw that more and more people calling the trick known to Leibnitz as the Feynman trick. I knew where it came from, I have read Surely you are joking Mr Feynman?! This might be one of the most preposterious cases illustrating the Stigler's law of eponymy.
The other similar situation is with Glasser's Master Theorem that dates back to Boole, 1857. There isn't yet a Wikipedia or Wolfram article for Feynman's trick, but there is for Glasser's Master Theorem. Boole is not even mentioned in these articles.
