of high valour and strongly resisted every British attempt to subjugate them. Kallars are largely found in the Southern districts of Thanjavur , Madurai , Pudukkottai , Trichy , Ariyalur , Theni , Dindigul , Sivaganga , Virudhunagar , Tirunelveli , Thiruvarur , Nagapattinam and Ramanathapuram districts of Tamil Nadu .