Karunanidhi belongs to the IsaiVellalrar commnity, traditionally they are the musicians in the Hindu temples. This is a pure Tamil caste and not a Tamil cast of Telugu origin like the Naykas or Naidus. Similarly Jayalalitha belongs to the Iyengar community. This is also a pure Tamil caste. Some Iyengare may now speak Kannad oar Telugu as thoer mother tongue due to living in these lands ofr centuries. However even many of them are familiar with Tamil. The Iyengars are one of the few Tamil castes that is exremly proud of their Tamil heritage and take pride in speaking good Tamil. Jayalalitha's ancestral hometown is Sri Rangam in TamilNadu. Just becouse she was born in Karnataka and speaks Kannada does not make her a Kannadiga.