Prithu had a son named Vishvagashva and Vishvagashva begot a son, named Adri. Adri had a son called Yuvanashva and Yuvanashva begot Shravasta.
विष्वगश्वः पृथोः पुत्रस्तस्मादद्रिश्च जज्ञिवान्। अद्रेश्च युवनाश्वस्तु श्रावस्तस्यात्मजोऽभवत्॥