I have been told by one very old person that my original place is vellore town in tamilnadu.I want to know mo?

I Have been told that our family is basically form VELLOR TOWN in TAMILNADU. MY Great grands name was PIRAJI and he was working with christian church or hospital in Vellore. It is believed that he had been migrated to ahmednagar( Maharashtra) by christian missionaries. PIRAJIs father name was BALAJI.We are TELUGU DHOBI by caste.We want to know about our original place, our kuldevata and our relatives ( may be in Vellore) Can any body help me ?