Ushanas

Ushanas is a rishi also known as Kavya; a tirtha on the Sarasvati bears his name. He appears among the shrines Vidura resorted to at SB 3.1.22: 'tasyAM tritasya ushanaso manosh cha'.

Śrīmad Bhāgavata Mahāpurāṇa 3.1.22 — Sanskrit Wikisource (pinned chapter page; Devanagari from the cross-validated transcription in validation/sanskrit_skandha3.json)