Inca Roca
Inca Roca (Inka Ruq'a, c. 1330–1380) is presented in the chronicles as the sixth ruler of Cusco and the first Sapa Inca of the Hanan Cusco dynasty, who reached the throne by a coup. After Cápac Yupanqui's death the Hanan faction rebelled, killed the designated heir Quispe Yupanki and placed Inca Roca on the throne.
The old order was not swept away: a Hurin chief stayed at the Inticancha as high priest of the Sun while the Hanan took secular power. Chronicles credit him with founding the Yachaywasi, the school where Inca noble boys learned Quechua, religion, quipus and warfare.
Legend gives him victories over the Chancas, who kept troubling his successors, though he more reliably seems to have improved the irrigation works around Cusco. His younger son Yáhuar Huácac succeeded him.