Atahualpa, also
Atahuallpa,
Atabalipa (in hispanicized spellings) or
Atawallpa (
Aymara and
Quechua) (c.1500–26 July 1533) was the last
Sapa Inca (sovereign emperor) of the
Inca Empire (Tawantinsuyu) before the
Spanish conquest. Atahualpa became emperor when he defeated and executed his older half-brother
Huáscar in a
civil war sparked by the death of their father, Inca
Huayna Capac, from an infectious disease (possibly
smallpox).