Historical linguistics, among other things, aims at understanding the principles and factors that cause changes in languages. The Dravidian comparative linguistics in the last few decades has arrived at excellent results at different levels of language change: phonology, morphology and etymology. However, the field of historical syntax remains to be explored in detail. The linguistic analysis of Tamil inscriptions and classical and ancient literary texts will shed light on the historical linguistics of Tamil and will try to fill a gap in the historical linguistics of the Dravidian family of languages. An in-depth linguistic analysis of Tamil epigraphic texts will show how the Tamil language used in Tamil inscriptions constitutes an important diachronic evidence of both sociolinguistic and linguistic evolution. I will concentrate here on the following three aspects: 1) Historical sociolinguistics: Maṇipravāḷa style and the development of Tamil as Inscriptional Language, 2) Historical linguistics, Syntax and Information structure, and 3) Construction of a fine-grained linguistic database and demonstrate how ‘corpus analysis’ can help us mapping the process of language change and language use.