Garudapurana 1.15.157

1.15.157

īśaśca sarvadevānāṃ dvārakāsaṃsthitastathā /
puṣkaraḥ puṣkarādhyakṣaḥ puṣkaradvīpa eva ca (1000) //

the Lord, and of all the gods; Dweller in Dvārakā;
Puṣkara, Presiding deity of Puṣkara, and indeed Puṣkaradvīpa;