Pleistarchus ( grc-gre, Πλείσταρχος ; died c. 458 BC) was the

Agiad The Agiad dynasty was one of the two royal families of Sparta, a powerful city-state of Ancient Greece. The Agiads were seniors to the other royal house, the Eurypontids, with whom they had an enduring rivalry. Their hypothetical founder was Agis I ...

King of Sparta For most of its history, the Ancient Greece, ancient Greek polis, city-state of Sparta in the Peloponnese was ruled by kings. Sparta was unusual among the Greek city-states in that it maintained its kingship past the archaic Greece, Archaic age. I ...

from 480 to 458 BC.

Biography

Pleistarchus was born as a

prince A prince is a male ruler (ranked below a king, grand prince, and grand duke) or a male member of a monarch's or former monarch's family. ''Prince'' is also a title of nobility (often highest), often hereditary, in some European states. Th ...

, likely the only son of King

Leonidas I Leonidas I (; grc-gre, Λεωνίδας; died 19 September 480 BC) was a king of the Greek city-state of Sparta, and the 17th of the Agiad line, a dynasty which claimed descent from the mythological demigod Heracles. Leonidas I was son of King ...

and

Queen Gorgo Gorgo (; el, Γοργώ ; 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). Gorgo was also the ...

. His grandparents were Kings

Anaxandridas II Anaxandridas II ( grc-gre, Ἀναξανδρίδας) was an Agiad king of Sparta between c. 560 BC and c. 524 BC, father of Leonidas I and grandfather of Pleistarchus. Under the leadership of the ephor Chilon, in office during the middle of th ...

and

Cleomenes I Cleomenes I (; Greek Κλεομένης; died c. 490 BC) was Agiad King of Sparta from c. 524 to c. 490 BC. One of the most important Spartan kings, Cleomenes was instrumental in organising the Greek resistance against the Persian Empire of Dariu ...

. He was born from an

avunculate marriage An avunculate marriage is a marriage with a parent's sibling or with one's sibling's child—i.e., between an uncle or aunt and their niece or nephew. Such a marriage may occur between biological (consanguine) relatives or between persons related ...

– his parents were

uncle An uncle is usually defined as a male relative who is a sibling of a parent or married to a sibling of a parent. Uncles who are related by birth are second-degree relatives. The female counterpart of an uncle is an aunt, and the reciprocal relat ...

and

niece In the lineal kinship system used in the English-speaking world, a niece or nephew is a child of the subject's sibling or sibling-in-law. The converse relationship, the relationship from the niece or nephew's perspective, is that of an ...

. His uncle Cleombrotus was his tutor. Pleistarchus' father King Leonidas perished in 480 BC at the

Battle of Thermopylae The Battle of Thermopylae ( ; grc, Μάχη τῶν Θερμοπυλῶν, label=Greek, ) was fought in 480 BC between the Achaemenid Persian Empire under Xerxes I and an alliance of Greek city-states led by Sparta under Leonidas I. Lasting o ...

. For the early part of Pleistarchus's reign, his uncle Cleombrotus acted as regent; after Cleombrotus's death in 479 BC, Pleistarchus's cousin

Pausanias Pausanias ( el, Παυσανίας) may refer to: *Pausanias of Athens, lover of the poet Agathon and a character in Plato's ''Symposium'' *Pausanias the Regent, Spartan general and regent of the 5th century BC *Pausanias of Sicily, physician of th ...

was

regent A regent (from Latin : ruling, governing) is a person appointed to govern a state '' pro tempore'' (Latin: 'for the time being') because the monarch is a minor, absent, incapacitated or unable to discharge the powers and duties of the monarchy ...

. It is unknown whether Pleistarchus was married. He died without an heir, and was succeeded by

Pleistoanax Pleistoanax, also spelled Plistoanax, ( grc-gre, Πλειστοάναξ) was Agiad king of Sparta from 458 to 409 BC. He was the leader of the peace party in Sparta at a time of violent confrontations against Athens for the hegemony over Greece. ...

, son of Pausanias.

Notes

{{Kings of Sparta 458 BC deaths 5th-century BC rulers 5th-century BC Spartans Agiad kings of Sparta Ancient child rulers Year of birth unknown