Going to origin, one discerns it occupying a coveted place in Varahapuranam as Sameevana
Kshetra. It was known as Thanjasuram then. Its derivation is quite interesting. The story goes
that it was the capital of a domineering wicked demon by name Thanjasuran.
While being slain for his
mis-deeds by Anandavalli the Mother of Universe, he implored her for the born of
naming the place of his birth and region as Thanjasuram, obviously to perpetuate his memory. It was
readily granted then and hence the name Thanjasuram. But later, it came to be known,
as Thanjapuram, a r form of Thanjasuram undoubtedly.