Many people are in search of the Native temples in Tamil Nadu. How to discover and reconnect the native temples of ancestors?

 I understand the timing of your question. You missed Maha Shivratri worship of your Kula Deivam.

1.Ask your parents, in which village your fathers’ ancestors lived.

2.If they are not knowing, ask someone in your kulam - uncles / aunts, grand uncles/ aunts, some elder know your family from your region.

3.If you find out your ancestors village, go to the village, meet the persons in your community, tell your family name if there is one.

4.You will get the name of the deity and the location of the temple.

Kuladeivam is believed to have some attributes or bodily memories of your lineage. By visiting his temple atleast once in a year, you will be getting the energy vibrations of your lineage which will clear of all your obstacles in life.

It is a custom to visit the temple before your marriage; before constructing a house; with your parents; with your children; with your brothers. You go with your problem, you will get a solution.