Adri was the son of king Viṣvagaśva (Vishwagashwa) of the Ikṣvāku (Ikshvaku) dynasty. He is the father of Yuvanāśva (Yuvanashwa).

Mahābhārata (Kinjawadekar)(3.202.3)
Mahābhārata Vols. 1-43 (Siddhāntabāgīśa)(3.172.3)