Ūrṇanābha(Urnanabha) is one of the hundred sons born of the womb of Gāndhārī (Gandhari), sired by Dhṛtarāṣtra (Dhritarashtra).

Mahābhārata (Kinjawadekar)(1.67.96; 1.117.5)
Mahābhārata Vols. 1-43 (Siddhāntabāgīśa)(1.62.98; 1.111.5)