The Ashvins vs The Dioscuri (Castor and Polydeuces)

The divine twin horsemen of the Rigveda, physicians of the gods who arrive in their chariot at dawn to heal the sick, rescue the shipwrecked, and restore youth to the old. More than fifty Rigvedic hymns are addressed to them.

Rigveda 10.17 says Saranyu, daughter of Tvashtar and wife of Vivasvat, bore the Ashvin brothers before leaving her children. Later tradition tells that she conceived them in the form of a mare.

The Ashvins are always paired and almost never distinguished. Their name means 'horsemen'; they are also called the Nasatyas. They drive a golden three-wheeled chariot and appear with the dawn, which ties them to Usha in the morning rites.

The divine twins Castor, tamer of horses, and Polydeuces (Pollux), the boxer, sons of Leda and brothers of Helen. Sailors prayed to them in storms, and after Castor's death the brothers were said to share immortality, alternating days between Olympus and the world below.

Leda bore the twins beneath Mount Taygetus after Zeus lay with her; some versions make only Polydeuces the son of Zeus and Castor the son of her husband Tyndareus. Their sisters were Helen and Clytemnestra.

The Homeric Hymns call the Tyndaridae the sons of Zeus, born to Leda beneath Mount Taygetus in Sparta: Castor the horse-tamer and Polydeuces the boxer. Other traditions differ: the *Odyssey* calls both sons of Leda's husband Tyndareus, while Pindar divides them, making Castor mortal and Polydeuces the immortal son of Zeus.