Buddhist Dictionary of Pali Proper Names by G P Malalasekera
Colaganga
Colaganga:1.Colaganga.-A Damila chief of South India,subdued by Lankāpura (Cv.lxxvi.121).He was then put to rule over the district of Parittikkundi.Ibid.,lxxvii.8.
2.Colaganga.-King of Ceylon (1196-7 A.C.).He was the son of King Nissanka’s sister.He slew Vikkamabāhu III.and reigned for nine months.He was then deposed by the general Kitti and his eyes were put out.Cv.lxxx.29ff