Gorgo (/ˈɡɔːrɡoʊ/; Greek: Γοργώ [ɡorɡɔ͜ɔ́]; fl. 480 BC) was a Spartan woman and wife to King Leonidas I (r. 489–480 BC). She was the daughter and the only known child of Cleomenes I, Leonidas' half-brother and King of Sparta (r. 520–490 BC).[1] Gorgo was also the mother of King Pleistarchus, her only son with King Leonidas I.[2] She is notably one of the few female historical figures actually named by Herodotus, and is depicted in sources as intelligent and wise.[3][4] Her birth date is uncertain, but based on Herodotus' dating, it is most likely to have been between 518 and 508 BC.[citation needed]