Parikshit

Maharaja Parikshit was the only surviving grandson of the Pandavas. He was born from Abhimanyu, Arjuna's son by Subhadra, and Uttara, the daughter of King Virata. He was a posthumous child, as his father Abhimanyu was killed during the battle of Kurukshetra, when Uttara was six months pregnant.

After the battle, Ashvatthama attempted to murder the embryo in Uttara's womb, by sending Brahmastra, but Parikshit was protected by Lord Krishna, who entered Uttara's womb in His Vishnu form and neutralized the heat. Thus he became known as Vishnurata, one who had been protected by Lord Vishnu.