Who was the Athenian noble defeated by aristocratic rivals while trying to establish himself as a tyrant?

The Athenian noble known for his attempt to seize power and establish himself as a tyrant was Cylon. In the 7th century BCE, Cylon, an Olympic champion, attempted a coup to take control of Athens. His efforts were thwarted by the aristocratic leaders of the time, resulting in his defeat and the subsequent execution of many of his supporters. This event is significant in the context of Athenian history as it exemplifies the struggles between emerging tyrants and established aristocratic powers.

Cylon's failure highlighted the tensions present in Athenian society as it moved toward greater democratic governance. His story set the stage for later figures in Athenian politics, such as Solon and Peisistratus, who would navigate similar political landscapes but with different outcomes and approaches.