BARTHOLOMEUS DE SANCTO CONCORDIO [Bartolomeus Pisanus] (1262-1347), Summa de casibus conscientiae, in Latin, DECORATED MANUSCRIPT ON PAPER
[Germany, second half 15th century]
291 x 216mm. 300 leaves: 1-2512 (first and final two leaves blank), COMPLETE, catchwords at inner corner of final versos of gatherings 1-20, early foliation inaccurate after 108, two columns of 39 lines written in black ink in several cursive bookhands between four verticals and 40 horizontals ruled in plummet, justification:208 x 65-7-65mm, references underlined and stroked red, paraphs and two-line initials in red, some with trefoil terminals, large skeletal initials in red opening index, prologue and Summa, initials not consistently supplied after f.192 (a few wormholes in first seven leaves slight water-staining affecting the edge of the lower margin of some folios). Contemporary panelled leather over unbevelled wooden boards, ruled and stamped in blind, border stamped with palmette, circular and lozenge-shaped tools, two brass catches, on upper cover, remains of one strap, vellum spine-lining strips from a 13th-century manuscript copy of Boethius' De philosophiae consolatione (scuffed, scratched and some wormholes, joints split, upper thongs split, lacking catches and bosses).
Paper label on upper cover, now defaced. It is likely that this is a monastic production and that it came from a monastic library.
Bartolomeus de Sancto Concordio, Summa de casibus conscientiae opening 'Quoniam ut ait Gregorius super Ezechielem' f.6, 'Abbas in suo monasterio conferre' f.6v, and ending 'est invidia ut dictum est supra Invidia para 2o. Sic laus deo' f.287; with a register of incipits of the sections of the work, from 'Abbas' to 'Zelus' on ff.2-6v.
Bartolomeo da San Concordio entered the Dominican Order in 1277. He studied at Bologna and Paris, and was lector logicae in several convents before returning to Pisa around 1330, where he remained until his death. He was renowned as a preacher, a poet in Latin and Italian, and a teacher in canon and civil law. His most influential work, and the most popular, was the Summa de casibus, an alphabetically arranged digest of moral guidance and canon law, which was used throughout the 14th and 15th centuries. Several editions were printed in the 15th century, the earliest in Italy in 1473 (GW 33450, IGI 1267).