Miltiades' family had special links with Thrace. In the context of Pisistratus' policy of controlling the Hellespont, his uncle Miltiades the Elder had occupied the Thracian Chersonese, where he became tyrant. Militades was first elected archon at Athens in 524 B.C. On the death of his brother Stesagoras, he became tyrant of the Chersonese and married the Thracian chief Olorus' daughter. He occupied Lemnos, which he handed over to Athens. In the course of Darius' campaign against the Scythians, Miltiades planned the destruction of the Persians' bridge over the Danube, so as to cut off Darius' army and assist the revolt of the Ionian cities. But when his plans were discovered by Histiaeus tyrant of Miletus and the revolt was suppressed, he was compelled to take refuge at Athens. There he was brought to trial as a tyrant, but was found not guilty. When Darius attacked Athens in 490 B.C., Miltiades was put at the head of the Athenian and Plataean forces. It was Miltiades' plan that led to the Hellenes' victory. After the battle of Marathon he judged that the Cyclades should be cleansed of Persian garrisons and of the Medizers. But during the operations in question, not many years afterwards, he was killed in a vain expedition against Paros. The Athenians in fact condemned him to pay down a fine of fifty talents for leading Athens on into a "wrongful" attack.