Fifth Sapa Inca; son of Mayta Cápac. The dual-honorific regnal name (Qhapaq + Yupanki) marks the most-elaborated form of the Inca royalty-and-dynastic-honor naming convention. Scion-class. Conventional dating c. 1320 CE. His reign in the chronicle tradition is structurally transitional — bridging the early-dynastic founder-generation expansions (Mayta Cápac's Alcabicas wars) and the more substantial later-dynastic territorial elaborations under Inca Roca and successors.