The son of Agnidhara, Nabhi, was married with Merudevi. They prayed to Vishnu for a child. He was born as their son. His name was Rishabha.
Rishabha had hundred sons, the firstborn was Bharata, who became king. The ancient name of India is Bharata. 9 ruled the Navadvipa. 81 composed the Karma Khanda. 9 became sages, the nine Yogishvara.
Read the story of Nabhi, Rishabha, Bharata here
http://onlynarayaneeyam.blogspot.com/2010/03/narayaneeyam-dasakam-20the-story-of.html