Prospero Fagnani (born in Italy, place and date of birth uncertain; died 1678) was an Italian

canon lawyer Canon law (from grc, κανών, , a 'straight measuring rod, ruler') is a set of ordinances and regulations made by ecclesiastical authority (church leadership) for the government of a Christian organization or church and its members. It is th ...

. Some writers place his birth in 1598, others in 1587 or in 1588. It is certain that he studied at

Perugia Perugia (, , ; lat, Perusia) is the capital city of Umbria in central Italy, crossed by the River Tiber, and of the province of Perugia. The city is located about north of Rome and southeast of Florence. It covers a high hilltop and part o ...

. At the age of twenty he was a

doctor of civil and canon law A doctor of both laws, from the Latin ''doctor utriusque juris'', or ''juris utriusque doctor'', or ''doctor juris utriusque'' ("doctor of both laws") (abbreviations include: JUD, IUD, DUJ, JUDr., DUI, DJU, Dr.iur.utr., Dr.jur.utr., DIU, UJD a ...

; at twenty-two, secretary of the

Congregation of the Council The Dicastery for the Clergy, formerly named Congregation for the Clergy (; formerly the Sacred Congregation for the Clergy and Sacred Congregation of the Council), is the dicastery of the Roman Curia responsible for overseeing matters regardin ...

. He held this office for fifteen years. He fulfilled the same functions in several other Roman Congregations. It is not certain that he ever lectured on canon law at the Roman University (Sapienza). He became blind at the age of forty-four. This affliction did not prevent him from devoting himself to canonical studies and from writing a commentary of the Decretals of Gregory IX, which gained for him the title of "Doctor Caecus Oculatissimus", i.e. the blind yet most far-sighted doctor. This commentary includes interpretations of the texts of the most difficult of the Decretals of Gregory IX. It is distinguished by the clearness with which the most complex and disputed questions of canon law are explained. The work is also of value for the purpose of ascertaining the practice of the Roman Congregations, especially that of the Congregation of the Council, of which the author quotes numerous decisions.

Pope Benedict XIV Pope Benedict XIV ( la, Benedictus XIV; it, Benedetto XIV; 31 March 1675 – 3 May 1758), born Prospero Lorenzo Lambertini, was head of the Catholic Church and ruler of the Papal States from 17 August 1740 to his death in May 1758.Antipope ...

gave this work the highest praise, and its authority is still continually appealed to in the Roman Congregations. It is divided, like the Decretals of Gregory IX, into five books. The first edition was published at Rome, in 1661, under the title of "Jus canonicum seu commentaria absolutissima in quinque libros Decretalium". It has been reprinted several times. Fagnani is reproached with excessive rigour in his commentary on the chapter of the Decretals "Ne innitaris" (Book I, De constitutionibus), in which he combats the doctrine of

probabilism In theology and philosophy, probabilism (from Latin ''probare'', to test, approve) is an ancient Greek doctrine of Academic skepticism. It holds that in the absence of certainty, plausibility or truth-likeness is the best criterion. The term can a ...

. Saint Alphonsus calls him "magnus rigoristarum princeps", the great prince of the rigorists (Homo apostolicus, Tract. I, no. 63; Theologia Moralis, IV, no. 669).

References

1678 deaths Canon law jurists University of Perugia alumni Year of birth unknown 17th-century Italian lawyers Italian jurists {{Italy-law-bio-stub