Isagoras (Greek: Ἰσαγόρας), son of Tisander, was an Athenian
aristocrat in the late 6th century BC.
He had remained in Athens during the tyranny of Hippias, but after
Hippias was overthrown, he became involved in a struggle for power
with Cleisthenes, a fellow aristocrat. In 508 BC he was elected
archon eponymous, but
Cleisthenes opposed him, with support from the
majority of the population.
Isagoras requested support from the
Spartan king Cleomenes I, an old friend who had earlier been given
hospitality by Isagoras. According to Herodotus, Cleomenes had had an
affair with Isagoras' wife.
Isagoras, with Cleomenes' help, expelled
Cleisthenes and other members
Alcmaeonidae family on pretext of the Alcmaeonidaean stain (see
Megacles). Cleisthenes' supporters and the ordinary Athenian citizens
revolted against Isagoras' tyranny, and ended up trapping
his Spartan allies on the Acropolis for two days. On the third day
they made a truce, allowed Cleomenes and
Isagoras to escape, and
executed 300 of Isagoras' supporters.
Cleisthenes then returned to the
city and became archon in the democracy.
^ Aristotle, The Athenian Constitution, Part 20
Aristocracy under Cleisthenes
Ruler of Athens