According to Garuḍapurāṇa (Garudapurana), Ūru (Uru) is one of the sons of the fourteenth Manu, namely, Bhautya.
In Bhāgavatapurāṇa (Bhagavatapurana), however, Ūru is mentioned as one of the sons of the fourteenth Manu Indrasāvarṇi (Indrasavarni). Gambhīra, Buddhi are the brothers are Ūru.