Agesilaus II
Cynisca was born around 442 BC in the ancient Greek city-state of Sparta and was the daughter of the Eurypontid king Archidamus II. Her brother was Agesilaus II, who later succeeded his father and became a king of Sparta. Because of her family's wealth, Cynisca was able to spend time developing her sporting skills and learning how to train horses for chariot racing, paving the way for her future Olympic victories. According to Pausanias, Cynisca was exceedingly ambitious to succeed at the Olympic Games from a young age .