According to Wikipedia:
"Not long afterwards, the nascent democracy was overthrown by the tyrant Peisistratos, but was reinstated after the expulsion of his son, Hippias, in 510. Cleisthenes issued reforms in 508 and 507 BC that undermined the domination of the aristocratic families and connected every Athenian to the city's rule. Cleisthenes formally identified free inhabitants of Attica as citizens of Athens, which gave them power and a role in a sense of civic solidarity.[8] He did this by making the traditional tribes politically irrelevant and instituting ten new tribes, each made up of about three treaties, each consisting of several demes. Every male citizen over 18 had to be registered in his deme."
The last Roman king was Lucius Tarquinius Superbus ("Tarquin the Proud"). In the traditional histories, Tarquin was expelled in 509 because his son Sextus Tarquinius had raped the noblewoman Lucretia, who afterwards took her own life. Lucretia's father, her husband Lucius Tarquinius Collatinus, and Tarquin's nephew Lucius Junius Brutus mustered support from the Senate and army, and forced Tarquin into exile in Etruria.
Both historical have the following in common:
Is this just coincidence?
Sorry to clarify, I mean Hipparchus, Hippias's brother. Hipparchus did the following according to the Greeks:
"Hipparchus was rejected by Harmodius, for whom he had unrequited feelings. Hipparchus invited Harmodius' young sister to be the kanephoros (to carry the ceremonial offering basket) at the Panathenaea festival, then publicly chased her away on the pretext she was not a virgin, as required. This publicly shamed Harmodius' family. With his lover Aristogeiton, Harmodius resolved to assassinate both Hippias and Hipparchus and thus to overthrow the tyranny"
This apparently happened in 509 BC. In that same year the Roman myth claims that Taqruin's son raped Lucretia which led to the overthrowing of the king and start of the Republic.