obi2canibe made 4 reasons to put factual errors tags. 
 Time to Time kingdom of Kandy annexed Jaffna kingdom - verified using referenced 3 sentence as above my comment. Verified sentence is not factual errors. 
 Removed the all other nations except Tamil Hindus and only included Muslims. But they massacred Sinhalese villages like Kent farm,Dollar farm,..
 Boundary between the Kandyan Kingdom and the British possessions - It was refereed in the article. Not a factual error. 
 possibly to several scattered settlements near the Eastern seaboard - Used the word most of Sri Lankan Tamils to recognize scattered SLTs. 
Now since I have fixed obi2canibe's concerns I am removing the factual error tag.