Note: Do not rely on this information. It is very old.
Codrus
Codrus (11th century B.C.) was the last king of Athens. He was the son of Melanthus, and sacrificed his life for his country in a war between the Athenians and Dorians. An oracle had declared - unlike the oracle in Scott's Lady of the Lake - that the blood of the Athenian king would ensure victory to his side. So Codrus entered the Dorian camp disguised, and was slain in a quarrel with some of the enemy's soldiers. The title of king was abolished by the Athenians, who thought no one fit to hold it after him.