rulers in Sri Lankan history. His invasion marks the final – cataclysmic – destruction of the kingdom of Rajarata, which had for so long been the heart of native power on the island. The great cities of the ancient kings were now lost and disappeared into the jungle, and were not rediscovered until the 19th century. Native power was henceforth centred on a kaleidoscopically shifting collection of kingdoms in south and central Sri Lanka. The north, in the meanwhile, eventually evolved into the Jaffna Kingdom, which was subjected colonial rule by the Portuguese in 1619. Kalinga Magha's geopolitical impact is reflected in the changing language of the Culavamsa as well. The traditional divisions of Sri Lanka, into Rajarata, Dhakkinadesa, and Ruhuna, first undergo a change of names (Rajarata becomes Pathithadesa, Dhakkinadesa becomes Mayarata), and then slip into obsolescence altogether. Their successor kingdoms tended to be geographically smaller and centred on a strong citadel-capital, such as Yapahuwa or Gampola; they also tended to be much short lived, like Sitawaka. Jaffna principality With the decline of the Rohana sub-kingdom and the defeat of Polonnaruwa, coming with the rise of Chola power, i.e., from about the 13th century CE, these regions became wild. The many irrigation works (tanks etc., which exist even today) became home to malaria (see History of Sri Lanka). In the meantime, the eastern coastal region remained less affected by Malaria and began to be occupied. Thus seafaring people who had begun to settle down along the coast since the Anuradhapura times, c. 6th Century CE began to flourish. The forests continued to be dominated by the Veddha population which claimed kingship ("cross-cousins") with the Sinhala kings of Kandy. Parakramabahu II's coronation took place in 1236. He turned his attention to the recovery of Polonnaruwa from the Tamils, and achieved this purpose by 1244. In this connection two kings are mentioned, Kalinga Magha and Jaya Bahu, who had been in power forty years, apparently reckoned from the time of the military rule after Sahasa Malla. As the Tamil war' and the `Malala war' as specifically mentioned by contemporary chronicles the two kings may have held different parts of the country. In the king's eleventh year (1244/5) Lanka was invaded by Chandrabhanu, a Javanese (Javaka) from Tambralinga, with a host armed with blow-pipes and poisoned arrows: he may have been a sea-robber, and though now repulsed descended on the Island later