The emperor पृथु , had two virtuous sons named अन्तर्धान and वादी . अन्तर्धान got a son named हविर्धान of his wife शिखण्डिनी . धिषणा of the race of अग्नि became the wife of हविर्धान . She got of हविर्धान six sons named प्राचीनबर्हिस्, शुक्र, गय, कृष्ण व्रज and अजिन . (Chapter 14, Aṃśa 1, Viṣṇu Purāṇa) . प्राचीनबर्हिस् had ten sons named प्रचेतस् . They were प्रजापतिस् . दक्ष was born of the ten प्रजापतिस् to वार्क्षी alias मारिषा . Therefore he got the name प्राचेतस् . [mh-1-75-5 ] Mahābhārata • Ādi parva .