Vedic Ashvins c. 1500 BCE; over 50 hymns in the Rigveda directly address them; their proto-Indo-European cognate (*H₂ésusā-sūnū*, sons of the sky-horse) is reconstructed by comparative mythologists; active Vedic worship c. 1500–500 BCE; persist as Nakula and Sahadeva (the twin Pandavas, born of the Ashvins) in the Mahabharata
