His cousin, Dappula, raised the banner of the rebellion from
Ruhuna and advanced as far as
Kala wewa and Sangha gama, Mahinda II advanced with the Queen and defeated Dappula. He could not exploit his victory because news reached him of the northern chieftains seizing
Anuradhapura. However, he was able to retake the Anuradhapura and ruled peacefully for a few years. Dappula used these years to rearm himself and gather another force with two other cousins attacked
Malaya Rata and captured it. Gathering more forces he surrounded the capital. The noise of his army was so great it was said that "heavens were like to rend asunder". King Mahinda II took counsel with his ministers and generals (senapathis) who declared that "what advantage to the king would be of maintaining in great pomp if they were to draw back at the hour of his (King's) need". Heartened by this, the king assembled his army and led it to victory once more. Dappula's two cousins were arrested, Dappula himself managed to escape to
Ruhuna. The northern and eastern areas of the country was then subjugated with many inhabitants of those regions inducted into the army. He reigned supreme for a few more years and married the captive Queen Sangha. She gave birth to a son named Dappula. From Ruhuna, Dappula made his third attempt at rebellion with the help of two brothers from east of the country. They set up camp on the western bank of the
Mahaweliganga. The king left a smaller garrison in Anuradhapura and marched to meet Dappula with his army. Dappula shifted his camp to Kovilara where they were attacked and routed by the King's forces. Dappula escaped to Ruhuna once again and there raised an army for the defence of the Ruhuna. Mahinda consulted monks and the wise men of the realm at
Thuparama and on their advice advanced to Ruhuna to finally rid the country of Dappula. He took up a position on a hill called Marapabbatha which was impregnable. In response, Dappula sent peace emissaries to the King and peace prevailed in the country. A large tribute of horses, elephants and gems were extracted from Dappula and the
Kaluganga river was fixed as the western boundary of the Ruhuna. ==Legacy and Death==