According to Bhāgavatapurāṇa (Bhagabata Purana), Vāstu (Vastu) is one of the sons of Vasu, daughter of Dakṣa (Daksha). Āṅgirasī (Angirasi)is Vāstu’s wife. Visvakarmā (Viswakarma) was born of Āṅgirasi’s womb, sired by Vāstu.

Bhāgavatpurāṇa Vols. 1-12(6.6.15)