eteṣām — of these; api — and; rāja-indra — O most eminent of kings; tanu-jānām — sons; madhu-dviṣaḥ — of Kṛṣṇa, enemy of the demon Madhu; pradyumnaḥ — Pradyumna; āsīt — was; prathamaḥ — first; pitṛvat — just like His father; rukmiṇī-sutaḥ — son of Rukmiṇī.