As a further elaboration to my previous post, the current post too deals with place names in Jaffna which originally had Sinhala names but has been Tamilinized later. These original Sinhala names were in use as late as Dutch period where they appear by the same names in the maps used by the Dutch colonial government.
Original Sinhala names Tamilinized names
Oorana Urani
Palyala Palali
Kottegampala Koddagapulam
Karadiva Karativ
Katuwana Kadduwan
Godigama Kodikamam
Kapudoova Kapputhoo
Vaslawatta Vatharavathai
Varan Yattala Varani Iyattalai
Mirivila Mirveli
Javakachcheriya Chavakachcheri
Kokilana Kuppilan
Navandara Navanturai
Sorowila Suruvil
Udupaella Oddupeli
Maavanpoluwa Maravanpulavu
Avusala Usan
Kudameeya Kudamian
Tambagama Tampakamam
Buthpura Buttur
Hirivila Siruvilan
Madurusala Munasal
Araella Arayali
Punnalakaduwa Punnalaikkaduwan
Itththavila Ittavil
Addaravaella Arukuveli
Punranna Poonaryn
Mavankulissa Maravankulissa
Sandilipe Sandilippai
Sankavaella Sankuveli
Thalapura Tolopuram
Athureliya Achchelu
Kumburukanniya Chempankundu
Deduwankotte Tadduwankodddai
Alapitiya Allaipiddi
Vasavila Vasavilan
Katuwana Kadduwan
Peduru Thuduwa Point Pedru
Kokkuvila Kokkuvil
Mandadiva Mandatiuv
Vaevunkaduva Veddukkadu
Neliya Neliyan
Batakotte Vaddukoddai
Vaelivaetithara Valivatithurai
Karanaeba Karanaval
Karavaedda Karaveddi
Dambakolathota Kankasanthurai
Colombathora Colombothurai
Urathota Kayts
Source: http://www.jaffnahistory.com/