Sri Lanka's Untouchables - Rodi (N o Sinhalese caste has aroused so much wonder and curiosity as the Rodi once the `untouchables' of Sri Lanka. Indeed there is something mysterious about this people who claim descent from Sinhalese royalty but who have for centuries been despised and down trodden by society.) The Rodi - The origins (The origins of the Rodi who constitute the lowest ranking caste and the only 'untouchables' in traditional Sinhalese society is an interesting one. Although traditionally regarded as a Sinhalese caste, there is reason to believe that the Rodi are descended from an aboriginal tribe of eastern India who migrated to Sri Lanka during some remote period.)