When Kleisthenes, the tyrant of Sicyon, won the chariot race at Olympia, by public proclamation he invited Greeks from all parts to come and compete as suitors for his daughter's hand. From among the thirteen guests, Megakles of Athens was finally chosen. During a great feast organised for the suitors and the whole population, Kleisthenes declared: "According to the law of Athens I give my daughter Agariste into Megakles' hands"; and Megakles promised to give his heart and hand to her. The paper discusses former interpretations of Herodotus' text and points out that Michel Alliot hits the target in recognising, in Kleisthenes' declaration, evidence of the freedom of choice of the applicable law under ancient Greek law.