[POPE PIUS V]. Extensio, ampliatio, nova concessio, et confirmatio privilegiorum in sacros ordines, et congregationes claustrales. Pro Canonicis regularibus Ordinis S. Augustini Congregationis domini Salvatoris.

Quarto (221×160mm), [14] vellum leaves. Italic type. Title-page with woodcut of Christ in Majesty; woodcuts of St. Augustin and of Pope Pius V's armorial on title verso. Two large historiated initials. Bound in contemporary dark brown morocco gilt with the arms of Pope Pius V on front cover and of Cardinal Flavio Orsini on back cover, frame with double fillet and cornerpieces on both covers; gilt edges. Manuscript note on last leaf.

A beautiful copy printed on vellum containing the privileges granted by Pope Pius V to the Canons Regular of St. Augustine. An official copy, attested by a notary on the last page. Only one copy of this edition is present in a public institution in the US (the Morgan Library). Several copies held in public libraries are bound identically to our copy. The Blado typography printed other editions of papal bulls granting privileges to religious orders in 1567–68. Extant copies of the editions Pro congregatione Lateranensi Canonicorum Regularium and Pro Congregatione Olivetana display similar bindings, with the arms of Pope Pius V on the upper cover. The former has the arms of Marco Antonio Colonna on lower cover, the latter has those of Cardinal Giovanni Battista Cicada. All these bindings most likely came from the same, unidentified binder at the Roman Papal court. The manuscript note on the last leaf reads: "Fla[vius] Car[dina]lis Urs[ini]s Protec[tor] M[auritius] Boccarinis Ca[mera] ap[postolica] notarus." Maurizio Boccarino, a notary of the Auditor of the Apostolic Chamber, is only known through this note and in relation to the testament of António da Fonseca, a Portuguese merchant and banker who died in Rome in 1588 (mentioned in Novoa, p. 91). Flavio Orsini (ca. 1530–1581) belonged to the House of Orsini, one of Rome's most prominent aristocratic families since the Middle Ages. He was appointed Auditor of the Apostolic Chamber and later was made a cardinal, in 1565. Pope Pius V (born Antonio Ghislieri 1504–1572) was a Dominican theologian and inquisitor. The first pope to be elected after the Council of Trent, he enforced its decrees with great rigour and founded the Sacred Congregation of the Index in 1571; he was canonized in 1712. The Canons Regular of St. Augustine are religious clerics that follows the Ruleof St. Augustine, originally composed in the early V century by the Doctor of the Church. The first communities of Canons Regular were founded in the late XI century, seeking to reform the monastic lifestyle of traditional monastic orders, such as the Benedictine Order.

Brunet IV, 681; IT\ICCU\CNCE\008945; Novoa, James N. "Unicorns and Bezoars in a Portuguese house in Rome. António da Fonseca's Portuguese Inventories." Ágora. Estudos Clássicos em debate, no. 14.1 (2012), pp. 91–111; Praet, J. van. Catalogue des livres imprimés sur vélin de la Bibliothèque du roi, II, 49–50.