Pope Clement IV (born Gui Foulques, c. 1200 – 29 November 1268) was the 181st pope of the Catholic Church, serving from 1265 until his death. He is chiefly remembered for issuing the papal bull *Licet Ecclesiarum* in 1265, which granted the Holy See exclusive rights over all unfilled ecclesiastical appointments throughout Christendom — a provision that remained the formal basis of papal patronage law until it was quietly superseded by the Council of Trent. Clement IV died in Viterbo, Italy, having never visited Rome during his entire pontificate, a distinction shared by only one other pope in the thirteenth century.