Women get scant mention in the history of Peru's Conquest by the Spanish. But where it not for a 15-year-old Inca princess named Quispe Sisa, Francisco Pizarro and his invading force might very well have been defeated.

Collage depicting Inca Atahualpa ordering his half-sister Quispe Sisa to give herself to Francisco Pizzaro. Inspired by and incorporating Juan Manuel Figueroa Aznar’s 1923 portrait for Luis Valcarcel’s Misión de Arte Incaico.