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Report No. a512

Summa Casinensis



Alternative Names

Continuatio prima



This decretist commentary, written at Bologna in 1185/86, was discovered by Stephan Kuttner in a Monte Cassino manuscript, where it covers Gratian’s Causa1, Causae 23–26 (the so-called Causae hereticorum) and (fragmentary) De consecratione. Its anonymous author claims to have commented on other parts of the Decretum as well, yet it remains uncertain whether these parts of the work survive. Perhaps, the fragmentary decretist commentary in an Aschaffenburg manuscript (Perg. 26, fol. 218ra–227rb) belongs to the Summa Casinensis. The work gained importance not so much by itself but due to the fact that it came to serve as the standard supplementary text for the unfinished parts of Huguccio’s widely read Summa, from C.23 q.4 c.34 to C.26. It completes Huguccio’s commentary in 12 copies, and thus medieval authors often attributed it to Huguccio himself. Modern students have instead described it as a Continuatio of Huguccio’s work. However, a closer look at the Summa Casinensis suggests that the author based his work on a reportatio of Bazianus’ lectures rather than on those of Huguccio. Concerning the identity of the canonist who composed the work, the text contains many references to Southern Italy, especially Campania. The same is evident in a contemporary decretist writing, the Summa Reginensis, with the result that they may reflect a common teacher.


Entry by: KP rev AL 2015



No. 1

Summa Casinensis.


Text(s) – Manuscripts

No. 1

Summa Casinensis.


Complete (all known parts)


a512Txt1Monte Cassino, Bibl. Abbazia 396, p. 113a–190b (ends at De cons. D.2 c.44)


On Causa 1 and the Cause Hereticorum


Paris, BN lat. 15396, fol. 100ra-107rb


Paris, BN lat. 15397, fol. 46vb-58rb


On the Cause Hereticorum


Paris, BN Can 17, fol. 310r–324v


a512Txt1Leipzig, Universitätsbibl. 985, fol. 234r–254r (ends at C.24 q.3 c.29)


Salamanca, Bibl. Univ. 1930


On C.23 q.4 c.33/34 - C.26


a512Txt1Admont, Stiftsbibl. 7, fol. 325ra–333vb (begins at C.24)


Firenze, Bibl. Laurenz. Fes. 126, fol. 109rb–125rb


Firenze, Bibl. Laurenz. Plut. I sin. 4, fol. 284ra–295r


Lons-le-Saunier, Arch. dép. Jura 16, fol. 313ra–325rb


Paris, BN lat. 3892, fol. 272ra–281va


Rouen, BM 749, fol. 245rb–256va


Città del Vaticano, BAV Vat. lat. 2280., fol. 248rb–256ra




a512Txt1Paris, BN lat. 15397, fol. 2ra–vb (contains C.1–C.1 q.1 c.13)


Text(s) – Modern Editions

No. 1

Summa Casinensis.

Modern Editions

None. Some excerpts printed by T. Lenherr in Die Exkommunikations– und Depositionsgewalt (1987) 226–28.



T. Lenherr, Die Exkommunikations– und Depositionsgewalt der Häretiker bei Gratian und den Dekretisten bis zur Glossa Ordinaria des Johannes Teutonicus (St. Ottilien 1987) 226–28.

S. Kuttner, ‘Retractationes VII’, in Gratian and the Schools of Law (1140–1234) (London 1983) 11–12.

S. Kuttner, ‘Bernardus Compostellanus antiquus’, Traditio, 1 (1943) 283 n.23.

S. Kuttner, Repertorium 158, 166.

F. Gillmann, ‘Die Abfassungszeit der Dekretglosse des Clm. 10244’, AKKR, 94 (1914) 246 n..

F. Gillmann, ‘Review of Tabulae fontium traditionis christianae (ad annum 1563), quas in usum scholarum collegit Dr. phil. J. Creusen, S. J.’, AKKR, 92 (1912) 367.

J. von Schulte, QL 1.157–61.