Here I copied/lifted/and-modified a part of a Wikipedia webpage ….
Kynisca was born in 440 BC in the ancient Greek city of Sparta and was the daughter of the Eurypontid king of Sparta, Archidamus II, and Eupoleia. She was also the sister of the later king of Sparta, Agesilaus II. She is said to have been a tomboy, an excellent equestrian and very wealthy, the perfect qualifications for a successful trainer. She was exceedingly ambitious to succeed at the Olympic Games and the first woman to breed horses and win an Olympic victory, according to Pausanias.
Her name means ‘female puppy’ in Ancient Greek.
While most women in the ancient Greek world were kept in seclusion and forbidden to learn any kind of skills in sports, riding or hunting, Spartan women by contrast were brought up from girlhood to excel at these things and to disdain household chores, by attending a boarding school similar to this that Spartan boys attended.
The ancient Olympic Games were almost entirely male-only and women were forbidden even to attend the main stadium at Olympia, where running events and combat sports were held. Women were allowed to enter only the equestrian events, not by running but by owning and training the horses.
Kynisca employed men and entered her team at the Olympics, where it won in the four-horse chariot racing (tethrippon Greek: τέθριππον) twice, in 396 BC and again in 392 BC. The irony is that she probably didn’t see her victories.
However, Kynisca was honored by having a bronze statue of a chariot and horses, a charioteer and a statue of herself in the Temple of Zeus in Olympia, by the side of the statue of Troilus, made by Apelles, and an inscription written declaring that she was the only female to win the wreath in the chariot events at the Olympic Games.
The first person in the inscription indicates that Kynisca was willing to push herself forward. In addition to this, a hero-shrine of Kynisca was erected in Sparta at Plane-tree Grove, where religious ceremonies were held. Only Spartan kings were graced in this way and Kynisca was the first woman to receive this honor. The inscription from Olympia (ca. 390-380 BC) reads:
Kings of Sparta are my father and brothers
Kyniska, victorious with a chariot of swift-footed horses,
have erected this statue. I declare myself the only woman
in all Hellas to have won this crown.
Apelleas son of Kallikles made it.