"Pope Sixtus IV (21 July 1414 – 12 August 1484), born Francesco della Rovere, was pope from 9 August 1471 to his death in 1484. His accomplishments as pope included the construction of the Sistine Chapel and the creation of the Vatican Archives. A patron of the arts, he brought together the group of artists who ushered the Early Renaissance into Rome with the first masterpieces of the city´s new artistic age.
Sixtus aided the Spanish Inquisition though he fought to prevent abuses therein, and he annulled the decrees of the Council of Constance. He was noted for his nepotism and was personally involved in the infamous Pazzi conspiracy." - (en.wikipedia.org 31.01.2020)
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