Wikipedia
Kunala
Kunala ( IAST: ) (263 BC - ?) was a son of Emperor Ashoka and Queen Padmavati and the presumptive heir to Ashoka, thus the heir to the Mauryan Empire which once ruled almost all of the Indian subcontinent. After the departure of Mahendra (who was Ashoka's eldest son), he was supposed to be the future heir to the empire, but was blinded by his step-mother, Tishyaraksha, at a young age in jealousy. While he was not able to take the throne, his son, Samprati, became his heir.
Kunala also served as the Viceroy of Taxila during the reign of his father, having been appointed to the position in 235 BC.