Alcmaeonidae

Alcmaeonidae ălk˝mēŏ´nĭdē [key], Athenian family powerful in the 7th, 6th, and 5th cent. BC Blamed for the murder of the followers of the would-be tyrant Cylon (c.632 BC), which had been ordered by Megacles, an archon who was a member of the family, they were considered attainted and were exiled. They were again in Athens in the 6th cent. The most prominent members of the family later were Cleisthenes, Pericles (whose mother was an Alcmaeonid), and Alcibiades.

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