Answer: the most famous, perhaps, is Alcibiades, greek notable and pupil of Socrates. He was accused of attempt against the sacred for presumably having distroyed some statues during a feast with some friends under the effect of alcohol. While he was on his way to Sicilia with the Athenian troops, a messanger reached him at the italian coasts in order to compell him to go back to Athens and stay in front of the court. He escaped and went to Sparta, who was in war against Athens and revealed the main strategical points of Athens. None the less he went back to Athens after some years and was received as hero. He fell though again in disgrace for reasons I have forgotten and was obliged to find exile in the Marmara Sea. There, he alerted passing Athenian navy of a possible trap put by Sparta, but was treated as betrayer and not listened to. The Athenian navy got completely lost.