The Incas organized themselves into descent groups based on divisions that traced their lineage to a founding father. The Inca dynastic rulers all traced their lineage to Manco Cápac. Lines of succession were clear in theory but often involved trickery, violence, and even war. The history of many of the rulers especially the early rulers is unclear, because the histories recorded by the chronicles are themselves contradictory and confusing. However, we know that Manco Cápac was the first Inca that lead the beginning of the most powerful group of people in the Americas.