Pythagorean Theorem found on clay tablet 1k years older than Pythagoras (2009)
This discussion leaves unclear the the role of Pythagoras of Samos in the discovery of the Pythagorean Theorem.  The statement of the theorem appears to have been known before the time of Pythagoras.  He is credited with giving the first proof of the theorem, within the framework of Greek mathematics.  On that claim his fame rests, although no record of his proof has survived.