IAS Balakrishnan (when he was in Orissa) has written and published a nice book connecting ORIAN VILLAGE NAMES with Tamil names.
Am sure our dear Kalinga Tamil Balu will be able to throw more light on this too.
Dr. nagaswamy has enlisted the Inscription number related to TN Villages and published wherein it is easy to locate whether a particular village contains any Published inscription !
Likewise some one can work the Village names and publish books ! TN Government has already published DISTRICT MANUALs containing various names in the District.
So this book also can be constrained to Villages in Each District (or a combination of adjacent districts !)...