sentences:  During the conquest of Zacatecas rich silver mines were discovered that made Cristóbal de Oñate and his partners Diego de Ibarra and Juan de Tolosa among the richest men in New Spain.Oñate settled at the Pánuco mine in Zacatecas, where five of his six children were born.One of his sons, Juan de Oñate, married Isabel de Tolosa Cortes-Moctezuma, granddaughter of conquistador Hernan Cortes and greatgranddaughter of the last Aztec Emperor Moctezuma Xocoyotzin.