Western blot
The Western blot is named after the person who invented the Southern blot, Edwin Southern.  Southern blots find DNA.  When scientists changed the Southern blot to find RNA, they called it a Northern blot.  When scientists changed the Southern blot to find proteins, they called it a Western blot.  When scientists changed the Southern blot to find lipids (fats), phosphates, and glycoconjugates, they called it an Eastern blot.