A महऋषि . The famous कालयवन was his son, born to him by his wife गोपाली . शैशिरायण was the priest of King त्रिगर्त . Once the king ordered the sage to have sexual union with his wife वृकादेवी to test his virility. (Harivaṃśa, 1 • 35 • 12) .