of Thanjavur , Madurai , Pudukkottai , Trichy , Ariyalur , Theni , Dindigul , Sivaganga , Virudhunagar , Tirunelveli , Thiruvarur , Nagapattinam and Ramanathapuram districts of Tamil Nadu . They are also present in Karur , Kanchipuram , Perambalur and Villupuram districts. One of their popular deities is Kallazhagar