Giovanni Matteo Sirtori (died 1545) was a Roman Catholic prelate who served as Bishop of Volterra (1531–1545). (in Latin)"Diocese of Volterra" Catholic-Hierarchy.org. David M. Cheney. Retrieved February 29, 2016"Diocese of Volterra" GCatholic.org. Gabriel Chow. Retrieved February 29, 2016
Biography On 15 November 1531, Giovanni Matteo Sirtori was appointed during the papacy of Pope Clement VII as Bishop of Volterra. He served as Bishop of Volterra until his death in 1545.
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