Chera King Cheralaathan Expedition to Himalayas 5100 CE

He also performed Tharapana,Religious rite for the dead, for those Dead ( who had no children).He was the King who gave lands and houses to Brahmins in Chera Kingdom, with a stipulation that he shall seize the gifts back the day he does not see smoke from Homa, Religious Rite Fire!

Lord Krishna Dynasty Ruled From Thiruvananthapuram, Vizhinjam?

There is one more Dynasty which has gone unnoticed.

The Ila.

This Dynasty,with evidence surfacing now,seems to have co existed with the Tamilakam Moovendar and could have preceded them.

Tamil King Offered Tharpana The Dead In Mahabharata 3102 BC

The Sanatana Dharma was an intruder into Tamil Culture, it was imposed by the Brahmins who crossed over th India through the Khyber Pass, say the Rationalists and The self-styled scholars of Tamil.

Yes , it was imposed to such an extent that the early Tamil literature Ahanaanuru records that the Chera King Udiyan Cheralaathan offered Tharpana to the people killed in the Mahabharata war.