The great Flood at the end of Caksusa manvantara wipes away all life forms. Only Vaivasvata Manu is saved by Lord Vishnu, in the avatar of the fish, Matsya to repopulate the earth in the next cycle. All royal lines in our cycle are traced in the itihasa from Manu Vaivasvata's sons and his only daughter Ila. Ikshvaku, the eldest son of Manu, establishes the solar line (from Vivasvan, the sun-god, the father of Vaivasvata Manu) at Ayodhya in Kosala. Iksvaku's younger son Nimi migrates a little further east and founds the house of Videha. Its capital Mithila is established by his son Mithi, also called Janaka which later becomes the generic name the kings of Videha.