This book has been the outcome of a long and exhaustive research that was carried out since 1992. Since written information on the people in study is so limited, a lot of stress is being laid on interviews and field study. The oral traditions and folklores of the people have been used in the best possible way to derive information. The book also makes an attempt to throw more light on the migration, economy, political institutions, religion, marriage, inheritance and others that the people have tried to preserve.