In this chapter of the Srimad Bhagavatam, various sons of Yama god of death are described:
The ten daughters given to Yamarāja were named Bhānu, Lambā, Kakud, Yāmi, Viśvā, Sādhyā, Marutvatī, Vasu, Muhūrtā and Saṅkalpā. Now hear the names of their sons. O King, a son named Deva-ṛṣabha was born from the womb of Bhānu, and from him came a son named Indrasena. From the womb of Lambā came a son named Vidyota, who generated all the clouds. From the womb of Kakud came the son named Saṅkaṭa, whose son was named Kīkaṭa. From Kīkaṭa came the demigods named Durgā. From Yāmi came the son named Svarga, whose son was named Nandi. The sons of Viśvā were the Viśvadevas, who had no progeny. From the womb of Sādhyā came the Sādhyas, who had a son named Arthasiddhi. The two sons who took birth from the womb of Marutvatī were Marutvān and Jayanta. Jayanta, who is an expansion of Lord Vāsudeva, is known as Upendra. The demigods named the Mauhūrtikas took birth from the womb of Muhūrtā. These demigods deliver the results of actions to the living entities of their respective times. The son of Saṅkalpā was known as Saṅkalpa, and from him lust was born. The sons of Vasu were known as the eight Vasus. Just hear their names from me: Droṇa, Prāṇa, Dhruva, Arka, Agni, Doṣa, Vāstu and Vibhāvasu.
My question is, what is the story of Vishnu's incarnation Jayanta, who is the son of Yama and Marutvati?
The only Jayanta I'm familiar with is Jayanta son of Indra, whose eye was poked out by Rama's Brahmastra as I discuss in this answer. And the other name he's known by, Upendra, is usually used to refer to Vishnu's incarnation Vamana the dwarf, because he was the younger brother of Indra.
In any case, are there any other scriptures which mention Yama's son Jayanta, and/or give his story?