Hiero II of Syracuse

Hiero II was the illegitimate son of a Syracusan noble who claimed descent from Gelon. He served as a general under Pyrrhus of Epirus before seizing power in Syracuse around 275 BC. He ruled Greek Sicily as tyrant until his death in 215 BC, navigating the First Punic War and keeping his city independent through careful allegiance. He is remembered now less for statecraft than for the gold crown he asked Archimedes to test — the puzzle that led to the displacement principle and the most famous bathtub sprint in history.