Devayani is a character in Hindu literature. She is described to be the daughter of Shukra, the acharya (preceptor) of the asuras, and his wife Jayanti, the daughter of Indra. She marries King Yayati, and gives birth to two sons — Yadu and Turvasu.
Devyani being rescued from the well by Yayati
Shukra is a Sanskrit word that means "clear" or "bright". It also has other meanings, such as the name of a sage who counselled the asuras in Vedic mythology. In medieval mythology and Hindu astrology, the word refers to the planet Venus, one of the Navagrahas.
Depiction of Shukra from the 1842 book The Complete Hindoo Pantheon by E. A. Rodrigues
The planet Venus