Singha, 1. Its amazing that learned people like you read the names so much wrong. 2. You need to know more about south India. For your immediate information, Unlike the modern names (Jishy,Mishi,Nishi) ,Most of the traditional Tamil & malayalee names will be similar (they put 'n' in the last. Similarly,dont get shocked when Kannada & Telugu names. These two are 'one set'; their language & culture also comparable.
I have great respect for you since you mention the 'real history' and defend Hindus (in many other articles).