Udbhava is one of the thousand names of God Viṣṇu (Vishnu). In Viṣṇusahasranāmastotra (Vishnusaharanamastotra; the Holy chant of the Thousand Names of Lord Vishnu), He is mentioned twice by this name.

Mahābhārata (Kinjawadekar)(13.149.54, 98)
Mahābhārata Vols. 1-43 (Siddhāntabāgīśa)(13.27.54, 98)