Son of Mittā, sister of Vijayabāhu I and of a Paṇḍu king (Paṇḍurājā). Mānābharaṇa and Sirivallabha were his brothers, and be married Vijayabāhu’s daughter, Lokanāthā (Cv.lix.42, 44). After Vijayabāhu’s death, Kittisirimegha ruled over the province of Dvādasasahassaka at Mahānāgahula with Mittā and Jayabāhu I. (Cv.lxi.22-7). After the death of Mānābharaṇa, Kittisirimegha took over also his province of Rohana (Cv.lxiii.2). When Gajabāhu succeeded Vikkamabāhu II, Kittisirimegha fought against him, but was defeated by the king’s officer Gokaṇṇa, and retired to his own province, where he was later joined by Parakkamabāhu at Saṅkhanāyakatthalī (Cv.lxiii.20, 34, 43).

Parakkama stayed with him, being adopted as his son, and his subsumption (upanayana) was held under Kittisirimegha’s orders at Baddalatthalī (Cv.lxiv.18, 25, 36). When, however, Parakkama escaped from the prince’s protection, he sent an army to capture him, but without success (Cv.lxvi.57 ff). Later, Parakkama himself went to see Kittisirimegha in the company of his mother Ratnāvalī, and Kittisirimegha gave orders to his followers to regard the prince as their master. He himself died soon after (Cv.xvii.16, 55, 60, 83, 87).