Markandeyapurana 53.24

53.24

teṣāṃ svanāmadheyāni krauñcadvīpe tathābhavan /
jyotiṣmataḥ kuśadvīpe putranāmāṅkitāni vai //

Moreover Dyutimat had seven sons; hear them also from me; Kuśala, and Manuga, Uṣṇa, and Prākara, Arthakāraka, and Muni, and Dundubhi who was famed as the seventh. And they had countries in Krauñcadvīpa, which were named after them.

In Kuśadvīpa itself also there were seven countries called by the names of the sons of Jyotiṣmat; hear their names from me—Udbhida, and Vaiṇava, Suratha, and Lambana, Dhṛtimat, and Prākara, and Kāpila the seventh.