It was the custom in early Greek historical times for the younger sons of noble houses to embark, in the fine sailing months of autumn, upon the honorable occupation of piracy. When Theseus received word that one such pirate and his crew were making off with the royal Athenian herds at Marathon, he raced to the seaside plain. He grabbed the miscreant by the scruff and spun him around to give him what for. But the moment king and pirate laid eyes upon one another, their enmity was forgotten. "You've caught me fair and square," said Peirithous, for this was the pirate's name, and he was of the royal house of the Thessalian Lapiths. "Name your punishment and it shall be done," said he, "for I like the looks of you." The admiration being mutual, Theseus named as penance an oath of perpetual friendship, and the two clasped hands upon it.