Teodorico Ranieri of Orvieto (died 7 December 1306) was an Italian cardinal.
In 1298 Ranieri was instrumental in the destruction of the city of Palestrina on the orders of Pope Boniface VIII, following the anti-papal revolt of the Colonna family.
He was then made a cardinal[2] in December of that year, and in 1300 until his death was the Camerlengo of the Holy Roman Church.
Ranieri came from an ecclesiastical family;[1] his uncle was the bishop of Piacenza and his brother Zampo was bishop of Soana, and of Pietro.
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