His original name was Hatun Tupaq Inca, but was named Viracocha after seeing visions of the god in Urcos. With Ccuri-chulpa, he had two additional sons, Inca Urco and Inca Socso. Events in Viracocha Inka"s life have been recorded by several Spanish writers.
The source closest to the original indigenous accounts comes from Juan de Betanzos, a Spanish commoner who rose to prominence by marrying an Inka princess and becoming the foremost translator for the colonial government of Cusco.
According to these accounts, including a widely recognized sixteenth century chronology written by Miguel Cabello Balboa, Viracocha Inka was a "warlike" and "valiant" prince. As a young man, Viracocha declared that after he took the throne "he would conquer half the world".
However, in 1438 when, according to Cobo, the Chanka offensive took place, Viracocha was advised to leave Cusco before the Chanca attack. The spoils were offered to Inca Viracocha to tread on, but he refused, stating Inca Urco should do so, as his successor.
One chronicler, Sarmiento de Gamboa, states that Viracocha was the first Incan to rule the territories he conquered, while his predecessors merely raided and looted them.
His captains, Apu Mayta and Vicaquirau, subdued the area within 8 leagues of Cuzco.