 At the death of her spouse, Topa Inca Yupanqui, in 1493, her son and heir, Huayna Capac, was still a minor.The favorite concubine of her late spouse, Ciqui Ollco, attempted to place her minor son Capac Huari on the throne by spreading planting the rumor, with assistance of a female relative, that the late Inca had willed the throne to Capac Huari.It was queen dowager Mama Ocllo who prevented this attempted coup by planting the rumor that Ciqui Ollco was a witch, had her and her female relative arrested (and probably executed), exiling Capac Huari to Chincheru, and had her own son installed as the next Inca.