Ilā (Ila) is the daughter of Vāyu (Vayu). She was married to Dhruva, son of King Uttānapāda (Uttanapada). Ilā gave birth to a son son called Utkala and a daughter, sired by Dhruva.

Bhāgavatpurāṇa Vols. 1-12(1.10.2)