Mudgalapurana 2.10.4

2.10.4

saptadvīpeśvarāstena sapta putrāḥ kṛtāḥ pare |
jambudvīpeśvaraṃ putraṃ āgnīdhramakaronnṛpaḥ ||

The remaining seven sons were made lords of the seven continents by him. / The king appointed his son Āgnīdhra the lord of Jambūdvīpa;