Sri Lankan government ,Man y of these so calle dSinhlaas because of their recent Sinhalisatin still are able to speak a queer form of Tamil. BUt this is dying out. Whilse this happened the Population in the North and East of Sri lanka lafgely remained unaffected by these Aryan migration and Buddhist introduction. So they stil spoke thier ancient language called Elu this language ws later called Tamil ( then Elu th eElu of the south wich became Tamil) . The Elu the thanthe Buddhist ocnverts spoke became Sinha Elu th eElu othe Sinhalas) and became Sinhala. This writing oth e elu language was called Eluthu. Therefor the any one who reamained HIndu ( the local Tamils trh e Veddhas. Nagas and also the the Aryan/Tamil descendants who never became Buddhist . moved to the North and east and became the Eelam Tamils ( like the SInhalas a signficant minorty of SriLankan Tamil are decended from the original Aryan/ Tami lmixed Sinhalas the ones who did not convert ot Buddhism but got assimilated by the Tamil Hindus) These Eelam Tamils Historically like th SInhalsa assimillaed many of the Chola/Pandayan and Kalinga invaders who setteld amongst them, The British aroudn 150 to 200 years ago brought in the South Indian ( mainly Tamil but amny Malayalees ( eg MGR ancestors) and Telugus) as indentured labourers. they are very different from the Native Eelam Tamils in theirhabbit language cutomes etc and live in the south
