The long-traditional view of the Roman Catholic Church in Spanish America as a monolithic, wealthy, and all powerful institution has been gradually modified by successive studies over the last thirty years. From these examinations emerges the picture of a complex institution characterized by diversity, and internal conflict. New research continues to enlarge and clarify understanding of the Church's role as an institution of the Spanish empire.What follows will, in highlighting the colonial Church's relationship to the Spanish crown, add to this view of it as a complex and diverse institution. An examination of crown policy with regard to Church finance in the sixteenth century shows that the episcopal hierarchy of the Mexican colonial Church had a subordinate relationship to the crown in the era of the Counter Reformation. Rather than a strong Church influencing the crown, what emerges is the portrait of a relatively weak, dependent institution, supported by the king. The secular church hierarchy had only enough power to carry out its function and serve as a counterpoint to the religious orders, not enough to achieve financial independence on its own. The basis for this relationship lies in the patrimonial nature of Castilian government and its dominant position over the Church hierarchy because of thePatronato Real.