[1] The reign of Vijayaraga probably witnessed the expansion of Chera Perumal influence into the neighboring Ay and Mushika countries (southern and northern Kerala).
[2] Vijayaraga appears as the royal prince as early as the fifth regnal year of Chera Perumal king Sthanu Ravi Kulasekhara (c. 849 AD).
[1][5] Vijayaraga must be the same royal who is described as the Kerala king 'Jayaraga' in the Mushika Vamsa Kavya, a dynastic chronicle composed in the 11th century AD.
According to the kavya, Jayaraga married the daughter of Kunchi Varma, the Mushika king at the time (North Kollam).
It was Goda Varma Keralaketu, a son of Jayaraga, who eventually re-established a truce between the two kingdoms.