Parakramabahu II of Dambadeniya

Parakkamabahu II was King of Dambadeniya in the 13th century, who ruled from 1234 to 1269. He succeeded his father Vijayabahu III as King of Dambadeniya and was succeeded by his son Vijayabahu IV.
He became the King of Dambadeniya in 1236. In 1258 He had to battle an invader named Chandrabahu from Southeast Asia. He succeeded in defeating
the Chola-Ganga invader, Magha. Unifying the three kingdoms of Sri Lanka is his greatest achievement.