Harmodius, an Athenian who in 514 B.C. conspired with Aristogeiton, his friend, against Hipparchus and his brother Hippias, the tyrant, but being betrayed were put to death; they figured in the traditions of Athens as political martyrs, and as such were honoured with statues.
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Harmattan * Harnack, Adolf