113992242-Dravidian-Settlements-in-Ceylon-and-the-Beginnings-of-the-Kingdom-of-Jaffna-By-Karthigesu-Indrapala-Complete-Phd-Thesis-University-of-London-1965

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The whole account seems to be of late origin, based on different
traditions of earlier invasions, and has hardly a claim to any
credence. Perhaps it refers to an iinlcriown migration, but this
is a matter of speculation.
It is possible that small groups of peaceful
settlers from South India trickled into the island in this
period. But the increase of the Dravidian element in the local
population seems to have been steadily maintained mainly by
the migration of mercenaries, mercantile communities and artisans.
It was only after the downfall of Polonnaruva, as we shall see
later, that many peaceful settlers from the Taniil country
migrated to the northern regions of the island.
The areas of Dravidian settlement in the island in
the latter part of the eleventh and the twelfth century, as in
the period of Ca rule, have to be traced primarily with the
help of Tamil inscriptions and Saiva archaeolo ical remains.
The meagre evidence of the literary sources and toponynis is
useful in supplementing the testimony of the epigraphic and
archaeological material. Inscriptions do not present much
difficulty in the attempt of tracing some of the probable areas
of settlement. Normally the provenance as well as the internal