Hippias (tyrant) in the context of "Cleomenes I"

Cleisthenes (/ˈklaɪsθɪniːz/ KLYS-thin-eez; Ancient Greek: Κλεισθένης), or Clisthenes (c. 570 – c. 508 BC), was an ancient Athenian lawgiver credited with reforming the constitution of ancient Athens and setting it on a democratic footing in 508 BC. For these accomplishments, historians refer to him as "the father of Athenian democracy". He was a member of the aristocratic Alcmaeonid clan. He was the younger son of Megacles and Agariste making him the maternal grandson of the tyrant Cleisthenes of Sicyon. He was also credited with increasing the power of the Athenian citizens' assembly and for reducing the power of the nobility over Athenian politics.

In 510 BC, Spartan troops helped the Athenians overthrow the tyrant Hippias, son of Peisistratus. Cleomenes I, king of Sparta, put in place a pro-Spartan oligarchy headed by Isagoras. However, Cleisthenes, with the support of the middle class and aided by democrats, took over. Cleomenes intervened in 508 and 506 BC, but could not stop Cleisthenes and his Athenian supporters. Through Cleisthenes' reforms, the people of Athens endowed their city with isonomic institutions—equal rights for all citizens (though only free men and women were citizens)—and established ostracism as a punishment.

Pisistratus (also spelled Peisistratus or Peisistratos; Ancient Greek: Πεισίστρατος Peisistratos; c. 600 BC – 527 BC) was a politician in ancient Athens, ruling as tyrant in the late 560s, the early 550s and from 546 BC until his death. His unification of Attica, the triangular peninsula of Greece containing Athens, along with economic and cultural improvements laid the groundwork for the later pre-eminence of Athens in ancient Greece. His legacy lies primarily in his institution of the Panathenaic Games, historically assigned the date of 566 BC, and the consequent first attempt at producing a definitive version of the Homeric epics. Pisistratus's championing of the lower class of Athens is an early example of populism. While in power, he did not hesitate to confront the aristocracy and greatly reduce their privileges, confiscating their lands and giving them to the poor. Pisistratus funded many religious and artistic programs, in order to improve the economy and spread the wealth more equally among the Athenian people.

Pisistratids is the common family or clan name for the three tyrants, who ruled in Athens from 546 to 510 BC, referring to Pisistratus and his two sons, Hipparchus and Hippias.

Harmodius (Greek: Ἁρμόδιος, Harmódios) and Aristogeiton (Ἀριστογείτων, Aristogeíton; both died 514 BC) were two lovers in Classical Athens who became known as the Tyrannicides (τυραννόκτονοι, tyrannoktonoi) for their assassination of Hipparchus, the brother of the tyrant Hippias, for which they were executed. A few years later, in 510 BC, the Spartan king Cleomenes I forced Hippias to go into exile, thereby opening the way to the subsequent democratic reforms of Cleisthenes. The Athenian democrats later celebrated Harmodius and Aristogeiton as national heroes, partially to conceal the role played by Sparta in the removal of the Athenian tyranny. Cleisthenes notably commissioned the famous statues of the Tyrannicides.

Cleisthenes (/ˈklaɪsθɪniːz/ KLYS-thin-eez; Greek: Κλεισθένης), or Clisthenes (c. 570 – c. 508 BC), was an ancient Athenian lawgiver credited with reforming the constitution of ancient Athens and setting it on a democratic footing in 508 BC. For these accomplishments, historians refer to him as "the father of Athenian democracy". He was a member of the aristocratic Alcmaeonid clan. He was the younger son of Megacles and Agariste making him the maternal grandson of the tyrant Cleisthenes of Sicyon. He was also credited with increasing the power of the Athenian citizens' assembly and for reducing the power of the nobility over Athenian politics.

In 510 BC, Spartan troops helped the Athenians overthrow the tyrant Hippias, son of Peisistratus. Cleomenes I, king of Sparta, put in place a pro-Spartan oligarchy headed by Isagoras. However, Cleisthenes, with the support of the middle class and aided by democrats, took over. Cleomenes intervened in 508 and 506 BC, but could not stop Cleisthenes and his Athenian supporters. Through Cleisthenes' reforms, the people of Athens endowed their city with isonomic institutions—equal rights for all citizens (though only free men and women were citizens)—and established ostracism as a punishment.

Gongylos (Ancient Greek: Γογγύλος), from Eretria in Euboea, was a 5th-century BCE Greek statesman who served as an intermediary between the Spartans and Xerxes I of the Achaemenid Empire, and was a supporter of the latter.

After the defeat of the Second Persian invasion of Greece in 479 BCE, Gongylos was forced to flee and take refuge in the Achaemenid Empire. There, Xerxes granted him the territory of Pergamon in Asia Minor from circa 470-460 BCE as a reward. His descendants ruled over the city until at least 400 BCE, forming the Gongylid dynasty of satraps. Gongylos was one of the several Greek aristocrats who took refuge in the Achaemenid Empire following reversals at home, other famous ones being Hippias, Demaratos, and Themistocles. In general, those were generously welcomed by the Achaemenid kings, and received land grants to support them, and ruled over various cities of Asia Minor.

Antenor (Ancient Greek: Ἀντήνωρ, Antḗnōr; fl. c. 540 – c. 500 BC) was an Athenian sculptor. He is recorded as the creator of the joint statues of the tyrannicides Harmodius and Aristogeiton funded by the Athenians on the expulsion of Hippias. These statues were carried away to Susa by Xerxes I of Persia during the Greco-Persian Wars. Archaeologists have also established that a basis signed by "Antenor son of Eumares" belonged to a set of female figures in an archaic style which were displayed in the acropolis. The sculptor of the Harmodius and Aristogeiton is usually listed as the son of Euphranor.