Parikshit

King of Ayodhya, married with Sushobhana, the daughter of Ayu, king of frogs. They had three sons, Sala, Dala, Vala. Sala was heir to the throne.

Read the story here
http://spiritualtreasureindia.blogspot.com/2016/03/mahabharata-parikshit-and-sushobhana.html