Manco Cápac

Manco Cápac, also known as Manco Inca and Ayar Manco was, according to some historians, the first governor and founder of the Inca civilization in Cusco, possibly in the early 13th century. He is also a main figure of Inca mythology, being the protagonist of the two best known legends about the origin of the Inca, both of them connecting him to the foundation of Cusco. His main wife was his older sister, Mama Uqllu, also the mother of his son and successor Sinchi Ruq'a. Even though his figure is mentioned in several chronicles, his actual existence remains uncertain.

Source: Wikipedia