Pierre d'Ailly
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Pierre d'Ailly was a French theologian, astrologer and cardinal of the Roman Catholic Church.
Pierre d'Ailly
Edition of Pierre d'Ailly's Tractatus de Imagine Mundi published by Johannes de Westfalia in Leuven (ca. 1483)
Lectura ad formandos libellos, Manuscript. Toledo Cathedral Library.
Council of Pisa
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The Council of Pisa was a controversial council held in 1409. It attempted to end the Western Schism by deposing both Benedict XIII and Gregory XII for schism and manifest heresy. The College of Cardi
Pierre d'Ailly
…was however not executed, ordered the arrest of the bishop. It was not until after the cardinals of the two colleges had led to the convocation of the Council of Pisa (1409) that d'Ailly renounced his support of Benedict XIII, and, for want of a better policy, again allied himself with the cause which he had championed…
The Cathedral of Pisa at sunset