Evidence of exact dates of the early [G 11 / Inca] leaders and what they really accomplished during their rules is very scanty. The Inca never developed a written form, and historians have had to depend on legends for evidence of early Inca history. These legends were handed down from the Inca to the first [L3 201 / Spanish chroniclers] who wrote the history of the Inca soon after the conquest.
We know the names of the Inca leaders and a series of legends are attached to some of them emphasizing their strength or courage. Sinchi Roca, the son of Manco Capac and Capac's sister, Mama Ocllo, became the second Inca leader. He is said to have married his sister and fathered Lloque Yupanqui, who became the third Inca leader despite having an elder brother.
The Inca generally followed the law of primogeniture when choosing their leaders, but in the case of Lloque Yupanqui, it seems to have been ignored. The legends about Yupanqui say that he did not produce any children until he took a new wife at an old age. She gave him a son, Mayta Capac, who became the fourth Inca leader.
The Spanish chroniclers were in dispute about exactly when the Inca began to expand. From the evidence of Garcilaso's chronicles, Mayta Capac was the first great conquering emperor who controlled the land from Lake Titicaca to the coastal rivers. Other chroniclers say he only fought battles in the Cuzco valley, which is more likely to be the truth.
From the legends which have grown up around Mayta Capac, he seems to have been a remarkable fighter. There are stories of him winning great battles while still only six years old! His younger son, Capac Yupanqui, became the fifth Inca leader because his brother was not suited to rule. Some chroniclers say that Capac Yupanqui made the first conquests outside the immediate vicinity of the Cuzco valley, but there is no real evidence of substantial conquests at this time. The Inca were almost certainly still a small tribe who had to fight for their survival against other neighboring tribes, and who only held the Cuzco valley.
Inca Roca, the son of Capac Yupanqui, became the sixth Inca leader. He continued to fight neighboring tribes and conquered some small groups about 20 miles south of Cuzco. He was generally reported to be both lazy and more interested in women than his kingdom.
Yahuar Huacac succeeded Capac Yupanqui after a long captivity by the Aymarca tribe. His name means `he who weeps blood' which is derived from a [L3 402 / legend] about an event which happened to him when he was a young boy. He does not seem to have accomplished much during his rule. His son, Hatun Tupac Inca, also called Viracocha after the god of creation in Inca religion, became the eighth Inca leader. He was the first Inca leader who began [L3 202 / substantial expansion of Inca territory.]
