Leonidas I

Leonidas I (/liːˈɒnɨdəs/ lee-ON-i-dəs or /liːˈɒn.ɨ.dæs/; Doric and Modern Greek: Λεωνίδας, Leōnidas; Ionic Greek: Λεωνίδης, Leōnidēs; "son of the lion"; died 480 BC), also known as Leonidas the Brave was a Greek hero-king of Sparta, the 17th of the Agiad line, third son of King Anaxandridas II of Sparta, who was believed to be a descendant of Herakles, possessing much of the latter's strength and bravery. Leonidas I is notable for his leadership at the Battle of Thermopylae.

Read more about Leonidas I:  Life, Battle of Thermopylae