Srimad Bhagavatam Canto 12, Chapter 01, Text 12

SB 12.1.12

sa eva candraguptam vai
 dvijo rajye ’bhiseksyati
tat-suto varisaras tu
 tatas casokavardhanah
 
Translation: 
 
This brahmana will enthrone Candragupta, whose son will be named Varisara. The son of Varisara will be Asokavardhana.
Srimad Bhagavatam Canto 12, Chapter 01, Text 11
Srimad Bhagavatam Canto 12, Chapter 01, Text 13