Bhagavatapurana 6.6.6

6.6.6

kakudaḥ saṅkaṭastasya kīkaṭastanayo yataḥ /
bhuvo durgāṇi yāmeyaḥ svargo nandistato 'bhavat //

6. The son of Kakub was Sankata whose son was Keekata, who gave birth to the gods that became the presiding deities of fortresses on earth; Jami's son is Swarga whose son is Nandi.