This is no firm date of birth recorded for Hippias, but we do know that he died in 490 BC.
He was "Tyrant of Athens" from 528/527 to 510 BC, so it's assumed that he was born sometime in the 550's or 540's BC.
Is this your homework question? It sounds like it. I suggest you research the following individuals, however: Solon, Pisistratos, Hippias and Hipparchos (Pisistratos' sons), and Kleisthenes/Cleisthenes. They are some of the key figures in the beginning of the democracy. Read a book to find out more - I recommend Greece in he Making by Robin Osborne, which you should be able to find in a city or school library.
Ivan Born was born in 1778.
Gary Born was born in 1955.
Iris Born was born in 1954.
Georgie Born was born on November 15, 1955.
Big different
In reaction to the tyranny of Hippias.
He was with the Persians at the battle of Marathon and is said to have died on the way back at Lemnos in 490 BC.
Hippias, the tyrant of Athens who was expelled, and went to Persia for help. King Darius I sent him with the Persian punitive expedition against Athens in 490 BCE to take control of Athens again and keep it quiet. The expedition failed at Marathon, and Hippias died there.
Hippias was a prominent figure in ancient Athens, known primarily as a tyrant who ruled alongside his brother Hipparchus in the 5th century BCE. He initially governed with relative acceptance but became increasingly oppressive after the assassination of Hipparchus in 514 BCE. His rule ended in 510 BCE when he was overthrown by a coalition of Athenian nobles and Sparta, leading to the establishment of a more democratic government in Athens. Hippias is often remembered as a symbol of tyranny in contrast to the ideals of democracy that emerged in the city-state.
Diagoras, Gorgias, Protagoras, Antiphon, Prodicus, Critias of Athens, Hippias of Elis etc
The ex-tyrant of Athens Hippias who the Persians intended to re-install in Athens after they captured it.
In 527-526 after the tyrant Peisistratus died he was replaced jointly by his sons Hipparchus and Hippias.
The first democracy in Athens was installed in 507 BCE by Cleisthenes in the face of an attempt by the oligarchs to regain power after the expulsion of the tyrant Hippias..
Sparta helped Athens expel its tyrant Hippias, providing a force to besiege him and force his exit into exile in Persia.
The Persians had brought along the Athenian ex-tyrant Hippias who had been ousted twenty years before, who they intended to have rule Athens for them and keep it quiet. The Athenians would in due course have got rid of Hippias again and gone back to their own ways. So the history of Greece might have just paused for a decade then gone on just the same.
Tyrant of Athens in the second half of the 6th Century BCE. Appointed to resolve looming civil war between the aristocrats and the repressed lower class.