The ancestral homes of Kodava clans known as Ainmanes are on the brink and only 30% of such homes that are known to exist or have been documented, have survived, said statistician and writer B. Nanjamma Chinnappa, in Mysuru on Sunday. It is reckoned that there are about 1700 okkas or patrilineal clans and Ms. Nanjamma Chinnappa and her husband …