Āyu, the son of Purūravā, had five sons — Nahuṣa, Kṣatravṛddha, Rajī, Rābha and Anenā. The son of Kṣatravṛddha was Suhotra, who had three sons, named Kāśya, Kuśa and Gṛtsamada. The son of Gṛtsamada was Śunaka, and his son was Śaunaka. The son of Kāśya was Kāśi. From Kāśi came the sons and grandsons known as Rāṣṭra, Dīrghatama and then Dhanvantari, who was the inaugurator of medical science and was a śaktyāveśa incarnation of the Supreme Personality of Godhead, Vāsudeva. The descendants of Dhanvantari were Ketumān, Bhīmaratha, Divodāsa and Dyumān, who was also known as Pratardana, Śatrujit, Vatsa, Ṛtadhvaja and Kuvalayāśva. The son of Dyumān was Alarka, who reigned over the kingdom for many, many years. Following in the dynasty of Alarka were Santati, Sunītha, Niketana, Dharmaketu, Satyaketu, Dhṛṣṭaketu, Sukumāra, Vītihotra, Bharga and Bhārgabhūmi. All of them belonged to the dynasty of Kāśi, the descendant of Kṣatravṛddha.